diff --git a/src/Spectre.Console/Widgets/Tree.cs b/src/Spectre.Console/Widgets/Tree.cs
index 289884e..859b53f 100644
--- a/src/Spectre.Console/Widgets/Tree.cs
+++ b/src/Spectre.Console/Widgets/Tree.cs
@@ -23,10 +23,19 @@ public sealed class Tree : Renderable, IHasTreeNodes
     /// </summary>
     public List<TreeNode> Nodes => _root.Nodes;
 
+    private bool _expanded { get; set; } = true;
     /// <summary>
     /// Gets or sets a value indicating whether or not the tree is expanded or not.
     /// </summary>
-    public bool Expanded { get; set; } = true;
+    public bool Expanded
+    {
+        get => _expanded;
+        set
+        {
+            _expanded = value;
+            _root.Expand(value);
+        }
+    }
 
     /// <summary>
     /// Initializes a new instance of the <see cref="Tree"/> class.