diff --git a/gallery/src/pages/components/ha-textarea.markdown b/gallery/src/pages/components/ha-textarea.markdown
new file mode 100644
index 0000000000..3bab7024d1
--- /dev/null
+++ b/gallery/src/pages/components/ha-textarea.markdown
@@ -0,0 +1,69 @@
+---
+title: Textarea
+---
+
+# Textarea `<ha-textarea>`
+
+A multiline text input component supporting Home Assistant theming and validation, based on webawesome textarea.
+Supports autogrow, hints, validation, and both material and outlined appearances.
+
+## Implementation
+
+### Example usage
+
+```html
+<ha-textarea label="Description" value="Hello world"></ha-textarea>
+
+<ha-textarea label="Notes" placeholder="Type here..." autogrow></ha-textarea>
+
+<ha-textarea label="Required field" required></ha-textarea>
+
+<ha-textarea label="Disabled" disabled value="Can't edit this"></ha-textarea>
+```
+
+### API
+
+This component is based on the webawesome textarea component.
+
+**Slots**
+
+- `label`: Custom label content. Overrides the `label` property.
+- `hint`: Custom hint content. Overrides the `hint` property.
+
+**Properties/Attributes**
+
+| Name               | Type                                                           | Default | Description                                                              |
+| ------------------ | -------------------------------------------------------------- | ------- | ------------------------------------------------------------------------ |
+| value              | String                                                         | -       | The current value of the textarea.                                       |
+| label              | String                                                         | ""      | The textarea's label text.                                               |
+| hint               | String                                                         | ""      | The textarea's hint/helper text.                                         |
+| placeholder        | String                                                         | ""      | Placeholder text shown when the textarea is empty.                       |
+| rows               | Number                                                         | 4       | The number of visible text rows.                                         |
+| resize             | "none"/"vertical"/"horizontal"/"both"/"auto"                   | "none"  | Controls the textarea's resize behavior.                                 |
+| readonly           | Boolean                                                        | false   | Makes the textarea readonly.                                             |
+| disabled           | Boolean                                                        | false   | Disables the textarea and prevents user interaction.                     |
+| required           | Boolean                                                        | false   | Makes the textarea a required field.                                     |
+| auto-validate      | Boolean                                                        | false   | Validates the textarea on blur instead of on form submit.                |
+| invalid            | Boolean                                                        | false   | Marks the textarea as invalid.                                           |
+| validation-message | String                                                         | ""      | Custom validation message shown when the textarea is invalid.            |
+| minlength          | Number                                                         | -       | The minimum length of input that will be considered valid.               |
+| maxlength          | Number                                                         | -       | The maximum length of input that will be considered valid.               |
+| name               | String                                                         | -       | The name of the textarea, submitted as a name/value pair with form data. |
+| autocapitalize     | "off"/"none"/"on"/"sentences"/"words"/"characters"             | ""      | Controls whether and how text input is automatically capitalized.        |
+| autocomplete       | String                                                         | -       | Indicates whether the browser's autocomplete feature should be used.     |
+| autofocus          | Boolean                                                        | false   | Automatically focuses the textarea when the page loads.                  |
+| spellcheck         | Boolean                                                        | true    | Enables or disables the browser's spellcheck feature.                    |
+| inputmode          | "none"/"text"/"decimal"/"numeric"/"tel"/"search"/"email"/"url" | ""      | Hints at the type of data for showing an appropriate virtual keyboard.   |
+| enterkeyhint       | "enter"/"done"/"go"/"next"/"previous"/"search"/"send"          | ""      | Customizes the label or icon of the Enter key on virtual keyboards.      |
+
+#### CSS Parts
+
+- `wa-base` - The underlying wa-textarea base wrapper.
+- `wa-hint` - The underlying wa-textarea hint container.
+- `wa-textarea` - The underlying wa-textarea textarea element.
+
+**CSS Custom Properties**
+
+- `--ha-textarea-padding-bottom` - Padding below the textarea host.
+- `--ha-textarea-max-height` - Maximum height of the textarea when using `resize="auto"`. Defaults to `200px`.
+- `--ha-textarea-required-marker` - The marker shown after the label for required fields. Defaults to `"*"`.
diff --git a/gallery/src/pages/components/ha-textarea.ts b/gallery/src/pages/components/ha-textarea.ts
new file mode 100644
index 0000000000..71660c214b
--- /dev/null
+++ b/gallery/src/pages/components/ha-textarea.ts
@@ -0,0 +1,151 @@
+import type { TemplateResult } from "lit";
+import { css, html, LitElement } from "lit";
+import { customElement } from "lit/decorators";
+import { applyThemesOnElement } from "../../../../src/common/dom/apply_themes_on_element";
+import "../../../../src/components/ha-card";
+import "../../../../src/components/ha-textarea";
+
+@customElement("demo-components-ha-textarea")
+export class DemoHaTextarea extends LitElement {
+  protected render(): TemplateResult {
+    return html`
+      ${["light", "dark"].map(
+        (mode) => html`
+          <div class=${mode}>
+            <ha-card header="ha-textarea in ${mode}">
+              <div class="card-content">
+                <h3>Basic</h3>
+                <div class="row">
+                  <ha-textarea label="Default"></ha-textarea>
+                  <ha-textarea
+                    label="With value"
+                    value="Hello world"
+                  ></ha-textarea>
+                  <ha-textarea
+                    label="With placeholder"
+                    placeholder="Type here..."
+                  ></ha-textarea>
+                </div>
+
+                <h3>Autogrow</h3>
+                <div class="row">
+                  <ha-textarea
+                    label="Autogrow empty"
+                    resize="auto"
+                  ></ha-textarea>
+                  <ha-textarea
+                    label="Autogrow with value"
+                    resize="auto"
+                    value="This textarea will grow as you type more content into it. Try adding more lines to see the effect."
+                  ></ha-textarea>
+                </div>
+
+                <h3>States</h3>
+                <div class="row">
+                  <ha-textarea
+                    label="Disabled"
+                    disabled
+                    value="Disabled"
+                  ></ha-textarea>
+                  <ha-textarea
+                    label="Readonly"
+                    readonly
+                    value="Readonly"
+                  ></ha-textarea>
+                  <ha-textarea label="Required" required></ha-textarea>
+                </div>
+                <div class="row">
+                  <ha-textarea
+                    label="Invalid"
+                    invalid
+                    validation-message="This field is required"
+                    value=""
+                  ></ha-textarea>
+                  <ha-textarea
+                    label="With hint"
+                    hint="Supports Markdown"
+                  ></ha-textarea>
+                  <ha-textarea
+                    label="With rows"
+                    .rows=${6}
+                    placeholder="6 rows"
+                  ></ha-textarea>
+                </div>
+
+                <h3>No label</h3>
+                <div class="row">
+                  <ha-textarea
+                    placeholder="No label, just placeholder"
+                  ></ha-textarea>
+                  <ha-textarea
+                    autogrow
+                    placeholder="No label, autogrow"
+                  ></ha-textarea>
+                </div>
+              </div>
+            </ha-card>
+          </div>
+        `
+      )}
+    `;
+  }
+
+  firstUpdated(changedProps) {
+    super.firstUpdated(changedProps);
+    applyThemesOnElement(
+      this.shadowRoot!.querySelector(".dark"),
+      {
+        default_theme: "default",
+        default_dark_theme: "default",
+        themes: {},
+        darkMode: true,
+        theme: "default",
+      },
+      undefined,
+      undefined,
+      true
+    );
+  }
+
+  static styles = css`
+    :host {
+      display: flex;
+      justify-content: center;
+    }
+    .dark,
+    .light {
+      display: block;
+      background-color: var(--primary-background-color);
+      padding: 0 50px;
+    }
+    ha-card {
+      margin: 24px auto;
+    }
+    .card-content {
+      display: flex;
+      flex-direction: column;
+      gap: var(--ha-space-2);
+    }
+    h3 {
+      margin: var(--ha-space-4) 0 var(--ha-space-1) 0;
+      font-size: var(--ha-font-size-l);
+      font-weight: var(--ha-font-weight-medium);
+    }
+    h3:first-child {
+      margin-top: 0;
+    }
+    .row {
+      display: flex;
+      gap: var(--ha-space-4);
+    }
+    .row > * {
+      flex: 1;
+    }
+  `;
+}
+
+declare global {
+  interface HTMLElementTagNameMap {
+    "demo-components-ha-textarea": DemoHaTextarea;
+  }
+}
diff --git a/package.json b/package.json
index f0c59dea68..a67b58dcf7 100644
--- a/package.json
+++ b/package.json
@@ -73,7 +73,6 @@
     "@material/mwc-radio": "0.27.0",
     "@material/mwc-select": "0.27.0",
     "@material/mwc-switch": "0.27.0",
-    "@material/mwc-textarea": "0.27.0",
     "@material/mwc-textfield": "0.27.0",
     "@material/mwc-top-app-bar": "0.27.0",
     "@material/mwc-top-app-bar-fixed": "0.27.0",
diff --git a/src/components/date-picker/ha-date-range-picker.ts b/src/components/date-picker/ha-date-range-picker.ts
index 70b3955da0..6d40e319e2 100644
--- a/src/components/date-picker/ha-date-range-picker.ts
+++ b/src/components/date-picker/ha-date-range-picker.ts
@@ -133,7 +133,8 @@ export class HaDateRangePicker extends LitElement {
           ${!this.minimal
             ? html`<ha-textarea
                   id="field"
-                  mobile-multiline
+                  rows="1"
+                  resize="auto"
                   @click=${this._openPicker}
                   @keydown=${this._handleKeydown}
                   .value=${(isThisYear(this.startDate)
@@ -336,14 +337,7 @@ export class HaDateRangePicker extends LitElement {
   private _setTextareaFocusStyle(focused: boolean) {
     const textarea = this.renderRoot.querySelector("ha-textarea");
     if (textarea) {
-      const foundation = (textarea as any).mdcFoundation;
-      if (foundation) {
-        if (focused) {
-          foundation.activateFocus();
-        } else {
-          foundation.deactivateFocus();
-        }
-      }
+      textarea.setFocused(focused);
     }
   }
 
diff --git a/src/components/ha-selector/ha-selector-text.ts b/src/components/ha-selector/ha-selector-text.ts
index cf3851f89b..1e0e2f188c 100644
--- a/src/components/ha-selector/ha-selector-text.ts
+++ b/src/components/ha-selector/ha-selector-text.ts
@@ -65,15 +65,14 @@ export class HaTextSelector extends LitElement {
         .label=${this.label}
         .placeholder=${this.placeholder}
         .value=${this.value || ""}
-        .helper=${this.helper}
-        helperPersistent
+        .hint=${this.helper}
         .disabled=${this.disabled}
         @input=${this._handleChange}
         autocapitalize="none"
         .autocomplete=${this.selector.text?.autocomplete}
         spellcheck="false"
         .required=${this.required}
-        autogrow
+        resize="auto"
       ></ha-textarea>`;
     }
     return html`<ha-input
diff --git a/src/components/ha-textarea.ts b/src/components/ha-textarea.ts
index 9805650d76..ddceef0df8 100644
--- a/src/components/ha-textarea.ts
+++ b/src/components/ha-textarea.ts
@@ -1,66 +1,249 @@
-import { TextAreaBase } from "@material/mwc-textarea/mwc-textarea-base";
-import { styles as textfieldStyles } from "@material/mwc-textfield/mwc-textfield.css";
-import { styles as textareaStyles } from "@material/mwc-textarea/mwc-textarea.css";
-import type { PropertyValues } from "lit";
-import { css } from "lit";
-import { customElement, property } from "lit/decorators";
+import "@home-assistant/webawesome/dist/components/textarea/textarea";
+import type WaTextarea from "@home-assistant/webawesome/dist/components/textarea/textarea";
+import { HasSlotController } from "@home-assistant/webawesome/dist/internal/slot";
+import { LitElement, css, html, nothing } from "lit";
+import { customElement, property, query } from "lit/decorators";
+import { classMap } from "lit/directives/class-map";
+import { ifDefined } from "lit/directives/if-defined";
+import { WaInputMixin, waInputStyles } from "./input/wa-input-mixin";
 
+/**
+ * Home Assistant textarea component
+ *
+ * @element ha-textarea
+ * @extends {LitElement}
+ *
+ * @summary
+ * A multi-line text input component supporting Home Assistant theming and validation, based on webawesome textarea.
+ *
+ * @slot label - Custom label content. Overrides the `label` property.
+ * @slot hint - Custom hint content. Overrides the `hint` property.
+ *
+ * @csspart wa-base - The underlying wa-textarea base wrapper.
+ * @csspart wa-hint - The underlying wa-textarea hint container.
+ * @csspart wa-textarea - The underlying wa-textarea textarea element.
+ *
+ * @cssprop --ha-textarea-padding-bottom - Padding below the textarea host.
+ * @cssprop --ha-textarea-max-height - Maximum height of the textarea when using `resize="auto"`. Defaults to `200px`.
+ * @cssprop --ha-textarea-required-marker - The marker shown after the label for required fields. Defaults to `"*"`.
+ *
+ * @attr {string} label - The textarea's label text.
+ * @attr {string} hint - The textarea's hint/helper text.
+ * @attr {string} placeholder - Placeholder text shown when the textarea is empty.
+ * @attr {boolean} readonly - Makes the textarea readonly.
+ * @attr {boolean} disabled - Disables the textarea and prevents user interaction.
+ * @attr {boolean} required - Makes the textarea a required field.
+ * @attr {number} rows - Number of visible text rows.
+ * @attr {number} minlength - Minimum number of characters required.
+ * @attr {number} maxlength - Maximum number of characters allowed.
+ * @attr {("none"|"vertical"|"horizontal"|"both"|"auto")} resize - Controls the textarea's resize behavior. Defaults to `"none"`.
+ * @attr {boolean} auto-validate - Validates the textarea on blur instead of on form submit.
+ * @attr {boolean} invalid - Marks the textarea as invalid.
+ * @attr {string} validation-message - Custom validation message shown when the textarea is invalid.
+ */
 @customElement("ha-textarea")
-export class HaTextArea extends TextAreaBase {
-  @property({ type: Boolean, reflect: true }) autogrow = false;
+export class HaTextArea extends WaInputMixin(LitElement) {
+  @property({ type: Number })
+  public rows?: number;
 
-  updated(changedProperties: PropertyValues) {
-    super.updated(changedProperties);
-    if (this.autogrow && changedProperties.has("value")) {
-      this.mdcRoot.dataset.value = this.value + '=\u200B"'; // add a zero-width space to correctly wrap
+  @property()
+  public resize: "none" | "vertical" | "horizontal" | "both" | "auto" = "none";
+
+  @query("wa-textarea")
+  private _textarea?: WaTextarea;
+
+  private readonly _hasSlotController = new HasSlotController(
+    this,
+    "label",
+    "hint"
+  );
+
+  protected get _formControl(): WaTextarea | undefined {
+    return this._textarea;
+  }
+
+  protected readonly _requiredMarkerCSSVar = "--ha-textarea-required-marker";
+
+  /** Programmatically toggle focus styling (used by ha-date-range-picker). */
+  public setFocused(focused: boolean): void {
+    if (focused) {
+      this.toggleAttribute("focused", true);
+    } else {
+      this.removeAttribute("focused");
     }
   }
 
-  static override styles = [
-    textfieldStyles,
-    textareaStyles,
+  protected render() {
+    const hasLabelSlot = this.label
+      ? false
+      : this._hasSlotController.test("label");
+
+    const hasHintSlot = this.hint
+      ? false
+      : this._hasSlotController.test("hint");
+
+    return html`
+      <wa-textarea
+        .value=${this.value ?? null}
+        .placeholder=${this.placeholder}
+        .readonly=${this.readonly}
+        .required=${this.required}
+        .rows=${this.rows ?? 4}
+        .resize=${this.resize}
+        .disabled=${this.disabled}
+        name=${ifDefined(this.name)}
+        autocapitalize=${ifDefined(this.autocapitalize || undefined)}
+        autocomplete=${ifDefined(this.autocomplete)}
+        .autofocus=${this.autofocus}
+        .spellcheck=${this.spellcheck}
+        inputmode=${ifDefined(this.inputmode || undefined)}
+        enterkeyhint=${ifDefined(this.enterkeyhint || undefined)}
+        minlength=${ifDefined(this.minlength)}
+        maxlength=${ifDefined(this.maxlength)}
+        class=${classMap({
+          input: true,
+          invalid: this.invalid || this._invalid,
+          "label-raised":
+            (this.value !== undefined && this.value !== "") ||
+            (this.label && this.placeholder),
+          "no-label": !this.label,
+          "hint-hidden":
+            !this.hint &&
+            !hasHintSlot &&
+            !this.required &&
+            !this._invalid &&
+            !this.invalid,
+        })}
+        @input=${this._handleInput}
+        @change=${this._handleChange}
+        @blur=${this._handleBlur}
+        @wa-invalid=${this._handleInvalid}
+        exportparts="base:wa-base, hint:wa-hint, textarea:wa-textarea"
+      >
+        ${this.label || hasLabelSlot
+          ? html`<slot name="label" slot="label"
+              >${this.label
+                ? this._renderLabel(this.label, this.required)
+                : nothing}</slot
+            >`
+          : nothing}
+        <div
+          slot="hint"
+          class=${classMap({
+            error: this.invalid || this._invalid,
+          })}
+          role=${ifDefined(this.invalid || this._invalid ? "alert" : undefined)}
+          aria-live="polite"
+        >
+          ${this._invalid || this.invalid
+            ? this.validationMessage || this._textarea?.validationMessage
+            : this.hint ||
+              (hasHintSlot ? html`<slot name="hint"></slot>` : nothing)}
+        </div>
+      </wa-textarea>
+    `;
+  }
+
+  static styles = [
+    waInputStyles,
     css`
       :host {
-        --mdc-text-field-fill-color: var(--ha-color-form-background);
+        display: flex;
+        align-items: flex-start;
+        padding-bottom: var(--ha-textarea-padding-bottom);
       }
-      :host([autogrow]) .mdc-text-field {
-        position: relative;
-        min-height: 74px;
-        min-width: 178px;
-        max-height: 200px;
+
+      /* Label styling */
+      wa-textarea::part(label) {
+        width: calc(100% - var(--ha-space-2));
+        background-color: var(--ha-color-form-background);
+        transition:
+          all var(--wa-transition-normal) ease-in-out,
+          background-color var(--wa-transition-normal) ease-in-out;
+        padding-inline-start: var(--ha-space-3);
+        padding-inline-end: var(--ha-space-3);
+        margin: var(--ha-space-1) var(--ha-space-1) 0;
+        padding-top: var(--ha-space-4);
+        white-space: nowrap;
+        overflow: hidden;
       }
-      :host([autogrow]) .mdc-text-field:after {
-        content: attr(data-value);
-        margin-top: 23px;
-        margin-bottom: 9px;
-        line-height: var(--ha-line-height-normal);
-        min-height: 42px;
-        padding: 0px 32px 0 16px;
-        letter-spacing: var(
-          --mdc-typography-subtitle1-letter-spacing,
-          0.009375em
-        );
-        visibility: hidden;
-        white-space: pre-wrap;
+
+      :host(:focus-within) wa-textarea::part(label),
+      :host([focused]) wa-textarea::part(label) {
+        color: var(--primary-color);
       }
-      :host([autogrow]) .mdc-text-field__input {
+
+      wa-textarea.label-raised::part(label),
+      :host(:focus-within) wa-textarea::part(label),
+      :host([focused]) wa-textarea::part(label) {
+        padding-top: var(--ha-space-2);
+        font-size: var(--ha-font-size-xs);
+      }
+
+      wa-textarea.no-label::part(label) {
+        height: 0;
+        padding: 0;
+      }
+
+      /* Base styling */
+      wa-textarea::part(base) {
+        min-height: 56px;
+        padding-top: var(--ha-space-6);
+        padding-bottom: var(--ha-space-2);
+      }
+
+      wa-textarea.no-label::part(base) {
+        padding-top: var(--ha-space-3);
+      }
+
+      wa-textarea::part(base)::after {
+        content: "";
         position: absolute;
-        height: calc(100% - 32px);
+        bottom: 0;
+        left: 0;
+        right: 0;
+        height: 1px;
+        background-color: var(--ha-color-border-neutral-loud);
+        transition:
+          height var(--wa-transition-normal) ease-in-out,
+          background-color var(--wa-transition-normal) ease-in-out;
       }
-      :host([autogrow]) .mdc-text-field.mdc-text-field--no-label:after {
-        margin-top: 16px;
-        margin-bottom: 16px;
+
+      :host(:focus-within) wa-textarea::part(base)::after,
+      :host([focused]) wa-textarea::part(base)::after {
+        height: 2px;
+        background-color: var(--primary-color);
       }
-      .mdc-floating-label {
-        inset-inline-start: 16px !important;
-        inset-inline-end: initial !important;
-        transform-origin: var(--float-start) top;
+
+      :host(:focus-within) wa-textarea.invalid::part(base)::after,
+      wa-textarea.invalid:not([disabled])::part(base)::after {
+        background-color: var(--ha-color-border-danger-normal);
       }
-      @media only screen and (min-width: 459px) {
-        :host([mobile-multiline]) .mdc-text-field__input {
-          white-space: nowrap;
-          max-height: 16px;
-        }
+
+      /* Textarea element styling */
+      wa-textarea::part(textarea) {
+        padding: 0 var(--ha-space-4);
+        font-family: var(--ha-font-family-body);
+        font-size: var(--ha-font-size-m);
+      }
+
+      :host([resize="auto"]) wa-textarea::part(textarea) {
+        max-height: var(--ha-textarea-max-height, 200px);
+        overflow-y: auto;
+      }
+
+      wa-textarea:hover::part(base),
+      wa-textarea:hover::part(label) {
+        background-color: var(--ha-color-form-background-hover);
+      }
+
+      wa-textarea[disabled]::part(textarea) {
+        cursor: not-allowed;
+      }
+
+      wa-textarea[disabled]::part(base),
+      wa-textarea[disabled]::part(label) {
+        background-color: var(--ha-color-form-background-disabled);
       }
     `,
   ];
diff --git a/src/components/input/ha-input.ts b/src/components/input/ha-input.ts
index 7d78deecad..3d1331eabe 100644
--- a/src/components/input/ha-input.ts
+++ b/src/components/input/ha-input.ts
@@ -11,14 +11,14 @@ import {
   html,
   nothing,
 } from "lit";
-import { customElement, property, query, state } from "lit/decorators";
+import { customElement, property, query } from "lit/decorators";
 import { classMap } from "lit/directives/class-map";
 import { ifDefined } from "lit/directives/if-defined";
-import memoizeOne from "memoize-one";
 import { stopPropagation } from "../../common/dom/stop_propagation";
 import "../ha-icon-button";
 import "../ha-svg-icon";
 import "../ha-tooltip";
+import { WaInputMixin, waInputStyles } from "./wa-input-mixin";
 
 export type InputType =
   | "date"
@@ -77,35 +77,16 @@ export type InputType =
  * @attr {string} validation-message - Custom validation message shown when the input is invalid.
  */
 @customElement("ha-input")
-export class HaInput extends LitElement {
+export class HaInput extends WaInputMixin(LitElement) {
   @property({ reflect: true }) appearance: "material" | "outlined" = "material";
 
   @property({ reflect: true })
   public type: InputType = "text";
 
-  @property()
-  public value?: string;
-
-  /** The input's label. */
-  @property()
-  public label = "";
-
-  /** The input's hint. */
-  @property()
-  public hint? = "";
-
   /** Adds a clear button when the input is not empty. */
   @property({ type: Boolean, attribute: "with-clear" })
   public withClear = false;
 
-  /** Placeholder text to show as a hint when the input is empty. */
-  @property()
-  public placeholder = "";
-
-  /** Makes the input readonly. */
-  @property({ type: Boolean })
-  public readonly = false;
-
   /** Adds a button to toggle the password's visibility. */
   @property({ type: Boolean, attribute: "password-toggle" })
   public passwordToggle = false;
@@ -118,22 +99,10 @@ export class HaInput extends LitElement {
   @property({ type: Boolean, attribute: "without-spin-buttons" })
   public withoutSpinButtons = false;
 
-  /** Makes the input a required field. */
-  @property({ type: Boolean, reflect: true })
-  public required = false;
-
   /** A regular expression pattern to validate input against. */
   @property()
   public pattern?: string;
 
-  /** The minimum length of input that will be considered valid. */
-  @property({ type: Number })
-  public minlength?: number;
-
-  /** The maximum length of input that will be considered valid. */
-  @property({ type: Number })
-  public maxlength?: number;
-
   /** The input's minimum value. Only applies to date and number input types. */
   @property()
   public min?: number | string;
@@ -146,88 +115,13 @@ export class HaInput extends LitElement {
   @property()
   public step?: number | "any";
 
-  /** Controls whether and how text input is automatically capitalized. */
-  @property()
-  // eslint-disable-next-line lit/no-native-attributes
-  public autocapitalize:
-    | "off"
-    | "none"
-    | "on"
-    | "sentences"
-    | "words"
-    | "characters"
-    | "" = "";
-
   /** Indicates whether the browser's autocorrect feature is on or off. */
   @property({ type: Boolean })
   public autocorrect = false;
 
-  /** Specifies what permission the browser has to provide assistance in filling out form field values. */
-  @property()
-  public autocomplete?: string;
-
-  /** Indicates that the input should receive focus on page load. */
-  @property({ type: Boolean })
-  // eslint-disable-next-line lit/no-native-attributes
-  public autofocus = false;
-
-  /** Used to customize the label or icon of the Enter key on virtual keyboards. */
-  @property()
-  // eslint-disable-next-line lit/no-native-attributes
-  public enterkeyhint:
-    | "enter"
-    | "done"
-    | "go"
-    | "next"
-    | "previous"
-    | "search"
-    | "send"
-    | "" = "";
-
-  /** Enables spell checking on the input. */
-  @property({ type: Boolean })
-  // eslint-disable-next-line lit/no-native-attributes
-  public spellcheck = true;
-
-  /** Tells the browser what type of data will be entered by the user. */
-  @property()
-  // eslint-disable-next-line lit/no-native-attributes
-  public inputmode:
-    | "none"
-    | "text"
-    | "decimal"
-    | "numeric"
-    | "tel"
-    | "search"
-    | "email"
-    | "url"
-    | "" = "";
-
-  /** The name of the input, submitted as a name/value pair with form data. */
-  @property()
-  public name?: string;
-
-  /** Disables the form control. */
-  @property({ type: Boolean })
-  public disabled = false;
-
-  /** Custom validation message to show when the input is invalid. */
-  @property({ attribute: "validation-message" })
-  public validationMessage? = "";
-
-  /** When true, validates the input on blur instead of on form submit. */
-  @property({ type: Boolean, attribute: "auto-validate" })
-  public autoValidate = false;
-
-  @property({ type: Boolean })
-  public invalid = false;
-
   @property({ type: Boolean, attribute: "inset-label" })
   public insetLabel = false;
 
-  @state()
-  private _invalid = false;
-
   @query("wa-input")
   private _input?: WaInput;
 
@@ -238,37 +132,8 @@ export class HaInput extends LitElement {
     "input"
   );
 
-  static shadowRootOptions: ShadowRootInit = {
-    mode: "open",
-    delegatesFocus: true,
-  };
-
-  /** Selects all the text in the input. */
-  public select(): void {
-    this._input?.select();
-  }
-
-  /** Sets the start and end positions of the text selection (0-based). */
-  public setSelectionRange(
-    selectionStart: number,
-    selectionEnd: number,
-    selectionDirection?: "forward" | "backward" | "none"
-  ): void {
-    this._input?.setSelectionRange(
-      selectionStart,
-      selectionEnd,
-      selectionDirection
-    );
-  }
-
-  /** Replaces a range of text with a new string. */
-  public setRangeText(
-    replacement: string,
-    start?: number,
-    end?: number,
-    selectMode?: "select" | "start" | "end" | "preserve"
-  ): void {
-    this._input?.setRangeText(replacement, start, end, selectMode);
+  protected get _formControl(): WaInput | undefined {
+    return this._input;
   }
 
   /** Displays the browser picker for an input element. */
@@ -286,17 +151,6 @@ export class HaInput extends LitElement {
     this._input?.stepDown();
   }
 
-  public checkValidity(): boolean {
-    return this._input?.checkValidity() ?? true;
-  }
-
-  public reportValidity(): boolean {
-    const valid = this.checkValidity();
-
-    this._invalid = !valid;
-    return valid;
-  }
-
   protected override async firstUpdated(
     changedProperties: PropertyValues
   ): Promise<void> {
@@ -345,6 +199,7 @@ export class HaInput extends LitElement {
         .name=${this.name}
         .disabled=${this.disabled}
         class=${classMap({
+          input: true,
           invalid: this.invalid || this._invalid,
           "label-raised":
             (this.value !== undefined && this.value !== "") ||
@@ -365,7 +220,9 @@ export class HaInput extends LitElement {
       >
         ${this.label || hasLabelSlot
           ? html`<slot name="label" slot="label"
-              >${this._renderLabel(this.label, this.required)}</slot
+              >${this.label
+                ? this._renderLabel(this.label, this.required)
+                : nothing}</slot
             >`
           : nothing}
         <slot name="start" slot="start" @slotchange=${this._syncStartSlotWidth}>
@@ -412,27 +269,6 @@ export class HaInput extends LitElement {
     return nothing;
   }
 
-  private _handleInput() {
-    this.value = this._input?.value ?? undefined;
-    if (this._invalid && this._input?.checkValidity()) {
-      this._invalid = false;
-    }
-  }
-
-  private _handleChange() {
-    this.value = this._input?.value ?? undefined;
-  }
-
-  private _handleBlur() {
-    if (this.autoValidate) {
-      this._invalid = !this._input?.checkValidity();
-    }
-  }
-
-  private _handleInvalid() {
-    this._invalid = true;
-  }
-
   private _syncStartSlotWidth = () => {
     const startEl = this._input?.shadowRoot?.querySelector(
       '[part~="start"]'
@@ -453,200 +289,128 @@ export class HaInput extends LitElement {
     }
   };
 
-  private _renderLabel = memoizeOne((label: string, required: boolean) => {
-    if (!required) {
-      return label;
-    }
+  static styles = [
+    waInputStyles,
+    css`
+      :host {
+        display: flex;
+        align-items: flex-start;
+        padding-top: var(--ha-input-padding-top);
+        padding-bottom: var(--ha-input-padding-bottom, var(--ha-space-2));
+        text-align: var(--ha-input-text-align, start);
+      }
+      :host([appearance="outlined"]) {
+        padding-bottom: var(--ha-input-padding-bottom);
+      }
 
-    let marker = getComputedStyle(this).getPropertyValue(
-      "--ha-input-required-marker"
-    );
+      wa-input::part(label) {
+        padding-inline-start: calc(
+          var(--start-slot-width, 0px) + var(--ha-space-4)
+        );
+        padding-inline-end: var(--ha-space-4);
+        padding-top: var(--ha-space-5);
+      }
 
-    if (!marker) {
-      marker = "*";
-    }
+      :host([appearance="material"]:focus-within) wa-input::part(label) {
+        color: var(--primary-color);
+      }
 
-    if (marker.startsWith('"') && marker.endsWith('"')) {
-      marker = marker.slice(1, -1);
-    }
+      wa-input.label-raised::part(label),
+      :host(:focus-within) wa-input::part(label),
+      :host([type="date"]) wa-input::part(label) {
+        padding-top: var(--ha-space-3);
+        font-size: var(--ha-font-size-xs);
+      }
 
-    if (!marker) {
-      return label;
-    }
+      wa-input::part(base) {
+        height: 56px;
+        padding: 0 var(--ha-space-4);
+      }
 
-    return `${label}${marker}`;
-  });
+      :host([appearance="outlined"]) wa-input.no-label::part(base) {
+        height: 32px;
+        padding: 0 var(--ha-space-2);
+      }
 
-  static styles = css`
-    :host {
-      display: flex;
-      align-items: flex-start;
-      padding-top: var(--ha-input-padding-top);
-      padding-bottom: var(--ha-input-padding-bottom, var(--ha-space-2));
-      text-align: var(--ha-input-text-align, start);
-    }
-    :host([appearance="outlined"]) {
-      padding-bottom: var(--ha-input-padding-bottom);
-    }
-    wa-input {
-      flex: 1;
-      min-width: 0;
-      --wa-transition-fast: var(--wa-transition-normal);
-      position: relative;
-    }
+      :host([appearance="outlined"]) wa-input::part(base) {
+        border: 1px solid var(--ha-color-border-neutral-quiet);
+        background-color: var(--card-background-color);
+        border-radius: var(--ha-border-radius-md);
+        transition: border-color var(--wa-transition-normal) ease-in-out;
+      }
 
-    wa-input::part(label) {
-      position: absolute;
-      top: 0;
-      font-weight: var(--ha-font-weight-normal);
-      font-family: var(--ha-font-family-body);
-      transition: all var(--wa-transition-normal) ease-in-out;
-      color: var(--secondary-text-color);
-      line-height: var(--ha-line-height-condensed);
-      z-index: 1;
-      pointer-events: none;
-      padding-inline-start: calc(
-        var(--start-slot-width, 0px) + var(--ha-space-4)
-      );
-      padding-inline-end: var(--ha-space-4);
-      padding-top: var(--ha-space-5);
-      font-size: var(--ha-font-size-m);
-    }
+      :host([appearance="material"]) ::part(base)::after {
+        content: "";
+        position: absolute;
+        bottom: 0;
+        left: 0;
+        right: 0;
+        height: 1px;
+        background-color: var(--ha-color-border-neutral-loud);
+        transition:
+          height var(--wa-transition-normal) ease-in-out,
+          background-color var(--wa-transition-normal) ease-in-out;
+      }
 
-    :host([appearance="material"]:focus-within) wa-input::part(label) {
-      color: var(--primary-color);
-    }
+      :host([appearance="material"]:focus-within) wa-input::part(base)::after {
+        height: 2px;
+        background-color: var(--primary-color);
+      }
 
-    :host(:focus-within) wa-input.invalid::part(label),
-    wa-input.invalid:not([disabled])::part(label) {
-      color: var(--ha-color-fill-danger-loud-resting);
-    }
+      :host([appearance="material"]:focus-within)
+        wa-input.invalid::part(base)::after,
+      :host([appearance="material"])
+        wa-input.invalid:not([disabled])::part(base)::after {
+        background-color: var(--ha-color-border-danger-normal);
+      }
 
-    wa-input.label-raised::part(label),
-    :host(:focus-within) wa-input::part(label),
-    :host([type="date"]) wa-input::part(label) {
-      padding-top: var(--ha-space-3);
-      font-size: var(--ha-font-size-xs);
-    }
+      wa-input::part(input) {
+        padding-top: var(--ha-space-3);
+        padding-inline-start: var(--input-padding-inline-start, 0);
+      }
 
-    wa-input::part(base) {
-      height: 56px;
-      background-color: var(--ha-color-form-background);
-      border-top-left-radius: var(--ha-border-radius-sm);
-      border-top-right-radius: var(--ha-border-radius-sm);
-      border-bottom-left-radius: var(--ha-border-radius-square);
-      border-bottom-right-radius: var(--ha-border-radius-square);
-      border: none;
-      padding: 0 var(--ha-space-4);
-      position: relative;
-      transition: background-color var(--wa-transition-normal) ease-in-out;
-    }
+      wa-input.no-label::part(input) {
+        padding-top: 0;
+      }
+      :host([type="color"]) wa-input::part(input) {
+        padding-top: var(--ha-space-6);
+        cursor: pointer;
+      }
+      :host([type="color"]) wa-input.no-label::part(input) {
+        padding: var(--ha-space-2);
+      }
+      :host([type="color"]) wa-input.no-label::part(base) {
+        padding: 0;
+      }
+      wa-input::part(input)::placeholder {
+        color: var(--ha-color-neutral-60);
+      }
 
-    :host([appearance="outlined"]) wa-input.no-label::part(base) {
-      height: 32px;
-      padding: 0 var(--ha-space-2);
-    }
+      wa-input::part(base):hover {
+        background-color: var(--ha-color-form-background-hover);
+      }
 
-    :host([appearance="outlined"]) wa-input::part(base) {
-      border: 1px solid var(--ha-color-border-neutral-quiet);
-      background-color: var(--card-background-color);
-      border-radius: var(--ha-border-radius-md);
-      transition: border-color var(--wa-transition-normal) ease-in-out;
-    }
+      :host([appearance="outlined"]) wa-input::part(base):hover {
+        border-color: var(--ha-color-border-neutral-normal);
+      }
+      :host([appearance="outlined"]:focus-within) wa-input::part(base) {
+        border-color: var(--primary-color);
+      }
 
-    :host([appearance="material"]) ::part(base)::after {
-      content: "";
-      position: absolute;
-      bottom: 0;
-      left: 0;
-      right: 0;
-      height: 1px;
-      background-color: var(--ha-color-border-neutral-loud);
-      transition:
-        height var(--wa-transition-normal) ease-in-out,
-        background-color var(--wa-transition-normal) ease-in-out;
-    }
+      wa-input:disabled::part(base) {
+        background-color: var(--ha-color-form-background-disabled);
+      }
 
-    :host([appearance="material"]:focus-within) wa-input::part(base)::after {
-      height: 2px;
-      background-color: var(--primary-color);
-    }
+      wa-input::part(end) {
+        color: var(--ha-color-text-secondary);
+      }
 
-    :host([appearance="material"]:focus-within)
-      wa-input.invalid::part(base)::after,
-    :host([appearance="material"])
-      wa-input.invalid:not([disabled])::part(base)::after {
-      background-color: var(--ha-color-border-danger-normal);
-    }
-
-    wa-input::part(input) {
-      padding-top: var(--ha-space-3);
-      padding-inline-start: var(--input-padding-inline-start, 0);
-    }
-
-    wa-input.no-label::part(input) {
-      padding-top: 0;
-    }
-    :host([type="color"]) wa-input::part(input) {
-      padding-top: var(--ha-space-6);
-      cursor: pointer;
-    }
-    :host([type="color"]) wa-input.no-label::part(input) {
-      padding: var(--ha-space-2);
-    }
-    :host([type="color"]) wa-input.no-label::part(base) {
-      padding: 0;
-    }
-    wa-input::part(input)::placeholder {
-      color: var(--ha-color-neutral-60);
-    }
-
-    :host(:focus-within) wa-input::part(base) {
-      outline: none;
-    }
-
-    wa-input::part(base):hover {
-      background-color: var(--ha-color-form-background-hover);
-    }
-
-    :host([appearance="outlined"]) wa-input::part(base):hover {
-      border-color: var(--ha-color-border-neutral-normal);
-    }
-    :host([appearance="outlined"]:focus-within) wa-input::part(base) {
-      border-color: var(--primary-color);
-    }
-
-    wa-input:disabled::part(base) {
-      background-color: var(--ha-color-form-background-disabled);
-    }
-
-    wa-input::part(hint) {
-      height: var(--ha-space-5);
-      margin-block-start: 0;
-      margin-inline-start: var(--ha-space-3);
-      font-size: var(--ha-font-size-xs);
-      display: flex;
-      align-items: center;
-      color: var(--ha-color-text-secondary);
-    }
-
-    wa-input.hint-hidden::part(hint) {
-      height: 0;
-    }
-
-    .error {
-      color: var(--ha-color-on-danger-quiet);
-    }
-
-    wa-input::part(end) {
-      color: var(--ha-color-text-secondary);
-    }
-
-    :host([appearance="outlined"]) wa-input.no-label {
-      --ha-icon-button-size: 24px;
-      --mdc-icon-size: 18px;
-    }
-  `;
+      :host([appearance="outlined"]) wa-input.no-label {
+        --ha-icon-button-size: 24px;
+        --mdc-icon-size: 18px;
+      }
+    `,
+  ];
 }
 
 declare global {
diff --git a/src/components/input/wa-input-mixin.ts b/src/components/input/wa-input-mixin.ts
new file mode 100644
index 0000000000..e1aa59b1d5
--- /dev/null
+++ b/src/components/input/wa-input-mixin.ts
@@ -0,0 +1,353 @@
+import { type LitElement, css } from "lit";
+import { property, state } from "lit/decorators";
+import memoizeOne from "memoize-one";
+import type { Constructor } from "../../types";
+
+/**
+ * Minimal interface for the inner wa-input / wa-textarea element.
+ */
+export interface WaInput {
+  value: string | null;
+  select(): void;
+  setSelectionRange(
+    start: number,
+    end: number,
+    direction?: "forward" | "backward" | "none"
+  ): void;
+  setRangeText(
+    replacement: string,
+    start?: number,
+    end?: number,
+    selectMode?: "select" | "start" | "end" | "preserve"
+  ): void;
+  checkValidity(): boolean;
+  validationMessage: string;
+}
+
+export interface WaInputMixinInterface {
+  value?: string;
+  label: string;
+  hint?: string;
+  placeholder: string;
+  readonly: boolean;
+  required: boolean;
+  minlength?: number;
+  maxlength?: number;
+  autocapitalize:
+    | "off"
+    | "none"
+    | "on"
+    | "sentences"
+    | "words"
+    | "characters"
+    | "";
+  autocomplete?: string;
+  autofocus: boolean;
+  spellcheck: boolean;
+  inputmode:
+    | "none"
+    | "text"
+    | "decimal"
+    | "numeric"
+    | "tel"
+    | "search"
+    | "email"
+    | "url"
+    | "";
+  enterkeyhint:
+    | "enter"
+    | "done"
+    | "go"
+    | "next"
+    | "previous"
+    | "search"
+    | "send"
+    | "";
+  name?: string;
+  disabled: boolean;
+  validationMessage?: string;
+  autoValidate: boolean;
+  invalid: boolean;
+  select(): void;
+  setSelectionRange(
+    start: number,
+    end: number,
+    direction?: "forward" | "backward" | "none"
+  ): void;
+  setRangeText(
+    replacement: string,
+    start?: number,
+    end?: number,
+    selectMode?: "select" | "start" | "end" | "preserve"
+  ): void;
+  checkValidity(): boolean;
+  reportValidity(): boolean;
+}
+
+export const WaInputMixin = <T extends Constructor<LitElement>>(
+  superClass: T
+) => {
+  class FormControlMixinClass extends superClass {
+    @property()
+    public value?: string;
+
+    @property()
+    public label? = "";
+
+    @property()
+    public hint? = "";
+
+    @property()
+    public placeholder? = "";
+
+    @property({ type: Boolean })
+    public readonly = false;
+
+    @property({ type: Boolean, reflect: true })
+    public required = false;
+
+    @property({ type: Number })
+    public minlength?: number;
+
+    @property({ type: Number })
+    public maxlength?: number;
+
+    @property()
+    // eslint-disable-next-line lit/no-native-attributes
+    public autocapitalize:
+      | "off"
+      | "none"
+      | "on"
+      | "sentences"
+      | "words"
+      | "characters"
+      | "" = "";
+
+    @property()
+    public autocomplete?: string;
+
+    @property({ type: Boolean })
+    // eslint-disable-next-line lit/no-native-attributes
+    public autofocus = false;
+
+    @property({ type: Boolean })
+    // eslint-disable-next-line lit/no-native-attributes
+    public spellcheck = true;
+
+    @property()
+    // eslint-disable-next-line lit/no-native-attributes
+    public inputmode:
+      | "none"
+      | "text"
+      | "decimal"
+      | "numeric"
+      | "tel"
+      | "search"
+      | "email"
+      | "url"
+      | "" = "";
+
+    @property()
+    // eslint-disable-next-line lit/no-native-attributes
+    public enterkeyhint:
+      | "enter"
+      | "done"
+      | "go"
+      | "next"
+      | "previous"
+      | "search"
+      | "send"
+      | "" = "";
+
+    @property()
+    public name?: string;
+
+    @property({ type: Boolean })
+    public disabled = false;
+
+    @property({ attribute: "validation-message" })
+    public validationMessage? = "";
+
+    @property({ type: Boolean, attribute: "auto-validate" })
+    public autoValidate = false;
+
+    @property({ type: Boolean })
+    public invalid = false;
+
+    @state()
+    protected _invalid = false;
+
+    static shadowRootOptions: ShadowRootInit = {
+      mode: "open",
+      delegatesFocus: true,
+    };
+
+    /**
+     * Override in subclass to return the inner wa-input / wa-textarea element.
+     */
+    protected get _formControl(): WaInput | undefined {
+      throw new Error("_formControl getter must be implemented by subclass");
+    }
+
+    /**
+     * Override in subclass to set the CSS custom property name
+     * used for the required-marker character (e.g. "--ha-input-required-marker").
+     */
+    protected readonly _requiredMarkerCSSVar: string =
+      "--ha-input-required-marker";
+
+    public select(): void {
+      this._formControl?.select();
+    }
+
+    public setSelectionRange(
+      selectionStart: number,
+      selectionEnd: number,
+      selectionDirection?: "forward" | "backward" | "none"
+    ): void {
+      this._formControl?.setSelectionRange(
+        selectionStart,
+        selectionEnd,
+        selectionDirection
+      );
+    }
+
+    public setRangeText(
+      replacement: string,
+      start?: number,
+      end?: number,
+      selectMode?: "select" | "start" | "end" | "preserve"
+    ): void {
+      this._formControl?.setRangeText(replacement, start, end, selectMode);
+    }
+
+    public checkValidity(): boolean {
+      return this._formControl?.checkValidity() ?? true;
+    }
+
+    public reportValidity(): boolean {
+      const valid = this.checkValidity();
+      this._invalid = !valid;
+      return valid;
+    }
+
+    protected _handleInput(): void {
+      this.value = this._formControl?.value ?? undefined;
+      if (this._invalid && this._formControl?.checkValidity()) {
+        this._invalid = false;
+      }
+    }
+
+    protected _handleChange(): void {
+      this.value = this._formControl?.value ?? undefined;
+    }
+
+    protected _handleBlur(): void {
+      if (this.autoValidate) {
+        this._invalid = !this._formControl?.checkValidity();
+      }
+    }
+
+    protected _handleInvalid(): void {
+      this._invalid = true;
+    }
+
+    protected _renderLabel = memoizeOne((label: string, required: boolean) => {
+      if (!required) {
+        return label;
+      }
+
+      let marker = getComputedStyle(this).getPropertyValue(
+        this._requiredMarkerCSSVar
+      );
+
+      if (!marker) {
+        marker = "*";
+      }
+
+      if (marker.startsWith('"') && marker.endsWith('"')) {
+        marker = marker.slice(1, -1);
+      }
+
+      if (!marker) {
+        return label;
+      }
+
+      return `${label}${marker}`;
+    });
+  }
+
+  return FormControlMixinClass;
+};
+
+/**
+ * Shared styles for form controls (ha-input / ha-textarea).
+ * Both components add the `control` CSS class to the inner wa-input / wa-textarea
+ * element so these rules can target them with a single selector.
+ */
+export const waInputStyles = css`
+  /* Inner element reset */
+  .input {
+    flex: 1;
+    min-width: 0;
+    --wa-transition-fast: var(--wa-transition-normal);
+    position: relative;
+  }
+
+  /* Label base */
+  .input::part(label) {
+    position: absolute;
+    top: 0;
+    font-weight: var(--ha-font-weight-normal);
+    font-family: var(--ha-font-family-body);
+    transition: all var(--wa-transition-normal) ease-in-out;
+    color: var(--secondary-text-color);
+    line-height: var(--ha-line-height-condensed);
+    z-index: 1;
+    pointer-events: none;
+    font-size: var(--ha-font-size-m);
+  }
+
+  /* Invalid label */
+  :host(:focus-within) .input.invalid::part(label),
+  .input.invalid:not([disabled])::part(label) {
+    color: var(--ha-color-fill-danger-loud-resting);
+  }
+
+  /* Base common */
+  .input::part(base) {
+    background-color: var(--ha-color-form-background);
+    border-top-left-radius: var(--ha-border-radius-sm);
+    border-top-right-radius: var(--ha-border-radius-sm);
+    border-bottom-left-radius: var(--ha-border-radius-square);
+    border-bottom-right-radius: var(--ha-border-radius-square);
+    border: none;
+    position: relative;
+    transition: background-color var(--wa-transition-normal) ease-in-out;
+  }
+
+  /* Focus outline removal */
+  :host(:focus-within) .input::part(base) {
+    outline: none;
+  }
+
+  /* Hint */
+  .input::part(hint) {
+    height: var(--ha-space-5);
+    margin-block-start: 0;
+    margin-inline-start: var(--ha-space-3);
+    font-size: var(--ha-font-size-xs);
+    display: flex;
+    align-items: center;
+    color: var(--ha-color-text-secondary);
+  }
+
+  .input.hint-hidden::part(hint) {
+    height: 0;
+  }
+
+  /* Error hint text */
+  .error {
+    color: var(--ha-color-on-danger-quiet);
+  }
+`;
diff --git a/src/components/media-player/ha-browse-media-tts.ts b/src/components/media-player/ha-browse-media-tts.ts
index 5fb7b02eb2..d1c9db50cd 100644
--- a/src/components/media-player/ha-browse-media-tts.ts
+++ b/src/components/media-player/ha-browse-media-tts.ts
@@ -58,7 +58,7 @@ class BrowseMediaTTS extends LitElement {
       <ha-card>
         <div class="card-content">
           <ha-textarea
-            autogrow
+            resize="auto"
             .label=${this.hass.localize(
               "ui.components.media-browser.tts.message"
             )}
@@ -200,7 +200,7 @@ class BrowseMediaTTS extends LitElement {
   }
 
   private async _ttsClicked(): Promise<void> {
-    const message = this.shadowRoot!.querySelector("ha-textarea")!.value;
+    const message = this.shadowRoot!.querySelector("ha-textarea")!.value ?? "";
     this._message = message;
     const item = { ...this.item };
     const query = new URLSearchParams();
diff --git a/src/panels/config/automation/automation-save-dialog/dialog-automation-save.ts b/src/panels/config/automation/automation-save-dialog/dialog-automation-save.ts
index ffa9c57bcc..82f3407362 100644
--- a/src/panels/config/automation/automation-save-dialog/dialog-automation-save.ts
+++ b/src/panels/config/automation/automation-save-dialog/dialog-automation-save.ts
@@ -169,10 +169,9 @@ class DialogAutomationSave extends LitElement implements HassDialog {
               "ui.panel.config.automation.editor.description.placeholder"
             )}
             name="description"
-            autogrow
+            resize="auto"
             .value=${this._newDescription}
-            .helper=${supportsMarkdownHelper(this.hass.localize)}
-            helperPersistent
+            .hint=${supportsMarkdownHelper(this.hass.localize)}
             @input=${this._valueChanged}
           ></ha-textarea>`
         : nothing}
diff --git a/src/panels/config/automation/condition/types/ha-automation-condition-template.ts b/src/panels/config/automation/condition/types/ha-automation-condition-template.ts
index 9526fc4ef3..1806cac7f5 100644
--- a/src/panels/config/automation/condition/types/ha-automation-condition-template.ts
+++ b/src/panels/config/automation/condition/types/ha-automation-condition-template.ts
@@ -1,6 +1,5 @@
 import { html, LitElement } from "lit";
 import { customElement, property } from "lit/decorators";
-import "../../../../../components/ha-textarea";
 import type { TemplateCondition } from "../../../../../data/automation";
 import type { HomeAssistant } from "../../../../../types";
 import type { SchemaUnion } from "../../../../../components/ha-form/types";
diff --git a/src/panels/config/automation/trigger/types/ha-automation-trigger-template.ts b/src/panels/config/automation/trigger/types/ha-automation-trigger-template.ts
index 4168e5e7d0..e62a6e1dc2 100644
--- a/src/panels/config/automation/trigger/types/ha-automation-trigger-template.ts
+++ b/src/panels/config/automation/trigger/types/ha-automation-trigger-template.ts
@@ -1,4 +1,3 @@
-import "../../../../../components/ha-textarea";
 import type { PropertyValues } from "lit";
 import { html, LitElement } from "lit";
 import { customElement, property } from "lit/decorators";
diff --git a/src/panels/config/cloud/account/dialog-cloud-support-package.ts b/src/panels/config/cloud/account/dialog-cloud-support-package.ts
index 59b8df0c06..af1818d5c6 100644
--- a/src/panels/config/cloud/account/dialog-cloud-support-package.ts
+++ b/src/panels/config/cloud/account/dialog-cloud-support-package.ts
@@ -8,7 +8,6 @@ import "../../../../components/ha-markdown-element";
 import "../../../../components/ha-dialog";
 import "../../../../components/ha-select";
 import "../../../../components/ha-spinner";
-import "../../../../components/ha-textarea";
 import { fetchSupportPackage } from "../../../../data/cloud";
 import type { HomeAssistant } from "../../../../types";
 import { fileDownload } from "../../../../util/file_download";
diff --git a/src/panels/config/developer-tools/assist/developer-tools-assist.ts b/src/panels/config/developer-tools/assist/developer-tools-assist.ts
index 1cfa4cf9a1..07d7854b26 100644
--- a/src/panels/config/developer-tools/assist/developer-tools-assist.ts
+++ b/src/panels/config/developer-tools/assist/developer-tools-assist.ts
@@ -69,7 +69,7 @@ class HaPanelDevAssist extends SubscribeMixin(LitElement) {
   }
 
   private async _parse() {
-    const sentences = this._sentencesInput.value
+    const sentences = (this._sentencesInput.value || "")
       .split("\n")
       .filter((a) => a !== "");
     const { results } = await debugAgent(this.hass, sentences, this._language!);
@@ -139,7 +139,7 @@ class HaPanelDevAssist extends SubscribeMixin(LitElement) {
                 `
               : nothing}
             <ha-textarea
-              autogrow
+              resize="auto"
               .label=${this.hass.localize(
                 "ui.panel.config.developer-tools.tabs.assist.sentences"
               )}
diff --git a/src/panels/todo/dialog-todo-item-editor.ts b/src/panels/todo/dialog-todo-item-editor.ts
index 88b4e0f2d7..1b3a478a32 100644
--- a/src/panels/todo/dialog-todo-item-editor.ts
+++ b/src/panels/todo/dialog-todo-item-editor.ts
@@ -3,19 +3,21 @@ import type { CSSResultGroup } from "lit";
 import { LitElement, css, html, nothing } from "lit";
 import { customElement, property, state } from "lit/decorators";
 import memoizeOne from "memoize-one";
+import { formatShortDateTimeWithConditionalYear } from "../../common/datetime/format_date_time";
 import { resolveTimeZone } from "../../common/datetime/resolve-time-zone";
 import { fireEvent } from "../../common/dom/fire_event";
 import { computeStateName } from "../../common/entity/compute_state_name";
 import { supportsFeature } from "../../common/entity/supports-feature";
+import { supportsMarkdownHelper } from "../../common/translations/markdown_support";
 import "../../components/ha-alert";
 import "../../components/ha-button";
 import "../../components/ha-checkbox";
 import "../../components/ha-date-input";
+import "../../components/ha-dialog";
 import "../../components/ha-dialog-footer";
 import "../../components/ha-textarea";
 import "../../components/ha-textfield";
 import "../../components/ha-time-input";
-import "../../components/ha-dialog";
 import type { TodoItem } from "../../data/todo";
 import {
   TodoItemStatus,
@@ -28,8 +30,6 @@ import { showConfirmationDialog } from "../../dialogs/generic/show-dialog-box";
 import { haStyleDialog } from "../../resources/styles";
 import type { HomeAssistant } from "../../types";
 import type { TodoItemEditDialogParams } from "./show-dialog-todo-item-editor";
-import { supportsMarkdownHelper } from "../../common/translations/markdown_support";
-import { formatShortDateTimeWithConditionalYear } from "../../common/datetime/format_date_time";
 
 @customElement("dialog-todo-item-editor")
 class DialogTodoItemEditor extends LitElement {
@@ -179,10 +179,10 @@ class DialogTodoItemEditor extends LitElement {
                 .label=${this.hass.localize(
                   "ui.components.todo.item.description"
                 )}
-                .helper=${supportsMarkdownHelper(this.hass.localize)}
+                .hint=${supportsMarkdownHelper(this.hass.localize)}
                 .value=${this._description}
                 @input=${this._handleDescriptionChanged}
-                autogrow
+                resize="auto"
                 .disabled=${!canUpdate}
               ></ha-textarea>`
             : nothing}