diff --git a/app/lib/Ui/Renderer/Html/Trellis/Runtime/Attribute/Textarea/HtmlTextareaAttributeRenderer.php b/app/lib/Ui/Renderer/Html/Trellis/Runtime/Attribute/Textarea/HtmlTextareaAttributeRenderer.php
index 823977e6..42150d81 100644
--- a/app/lib/Ui/Renderer/Html/Trellis/Runtime/Attribute/Textarea/HtmlTextareaAttributeRenderer.php
+++ b/app/lib/Ui/Renderer/Html/Trellis/Runtime/Attribute/Textarea/HtmlTextareaAttributeRenderer.php
@@ -47,6 +47,7 @@ protected function getEditorParameters(array $current_params)
         $editor = [];
 
         $editor['enabled'] = $this->getOption('editor_enabled', false);
+        $editor['autogrow'] = $this->getOption('editor_autogrow', false);
         $editor['twig'] = $this->getOption('editor_twig', 'html/attribute/textarea/htmlrichtexteditor.twig');
         $editor['options'] = json_encode(
             array_merge(
diff --git a/app/templates/html/attribute/textarea/htmlrichtexteditor.twig b/app/templates/html/attribute/textarea/htmlrichtexteditor.twig
index b550a531..534947ba 100644
--- a/app/templates/html/attribute/textarea/htmlrichtexteditor.twig
+++ b/app/templates/html/attribute/textarea/htmlrichtexteditor.twig
@@ -13,7 +13,7 @@
         <li class="item"><button type="button" data-editor-action="redo" title="{{ _('redo.title', 'application.hrte') }}"><span>{{ _('redo', 'application.hrte') }}</span></button>
         <li class="item"><button type="button" data-editor-action="autogrow" title="{{ _('autogrow.title', 'application.hrte') }}"/>&#x21D5;</button>
     </ul>
-    <div class="editor-hrte"></div>
+    <div class="editor-hrte {{ editor.autogrow ? 'autogrow' : '' }}"></div>
     <div class="editor-popup editor-popup-link">
         <div>
             <h2>{{ _('popup-link.header', 'application.hrte') }}</h2>