---
id: fast-element.subtreebehavioroptions.subtree
title: SubtreeBehaviorOptions.subtree property
hide_title: true
---
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[@microsoft/fast-element](./fast-element.md) &gt; [SubtreeBehaviorOptions](./fast-element.subtreebehavioroptions.md) &gt; [subtree](./fast-element.subtreebehavioroptions.subtree.md)

## SubtreeBehaviorOptions.subtree property

Indicates that child subtrees should be observed for changes.

<b>Signature:</b>

```typescript
subtree: boolean;
```