diff --git a/core/toolbox/toolbox.ts b/core/toolbox/toolbox.ts
index e03b09a37f0..dd3c0db6be8 100644
--- a/core/toolbox/toolbox.ts
+++ b/core/toolbox/toolbox.ts
@@ -226,6 +226,11 @@ export class Toolbox
       contentsContainer.style.flexDirection = 'row';
     }
     aria.setRole(contentsContainer, aria.Role.TREE);
+    aria.setState(
+      contentsContainer,
+      aria.State.LABEL,
+      Msg['TOOLBOX_ARIA_LABEL'],
+    );
     return contentsContainer;
   }
 
diff --git a/core/workspace_svg.ts b/core/workspace_svg.ts
index e09618bb9d8..dbaf4aa1194 100644
--- a/core/workspace_svg.ts
+++ b/core/workspace_svg.ts
@@ -801,6 +801,7 @@ export class WorkspaceSvg
     if (this.isFlyout) {
       // Use the block canvas as the primary tree parent for flyout blocks.
       aria.setRole(this.svgBlockCanvas_, aria.Role.TREE);
+      aria.setState(this.svgBlockCanvas_, aria.State.LABEL, ariaLabel);
     } else {
       browserEvents.conditionalBind(
         this.svgGroup_,