How to add a tree

Steps

1. Add "Plant Growth Phase Manager" component to a GameObject

   

2. Create a "Tree Growth Phase" asset

   

3. Configure the asset

   

4. Add "Tree Growth Terrain Manager" component in the same place as the "Terrain" component

   

5. Insert the desired phase in the field of the component and click on the "Add" button

   

6. Select "Paint Trees" on the "Terrain" component and use the new prototype added to the terrain through the "Scene" window

   

Result