For more detail this asset from the Unity Asset Store: Click Here
This is a paid asset, but now you can download Kapok Package for FREE, Please keep in mind this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
Kapok Package v1.0
“If possible, please buy the package to support the developer”
These SpeedTree models feature seamless LOD transitions and scalable wind effects that work in Unity out of the box. Package includes:
• Spring, summer, bare, and vine-covered versions in hero, desktop, and mobile resolutions.
• 48 high-res diffuse/normal/specular maps.
• 9 leaf map maker SPM files (details).
Create limitless variations of each model or design something completely new with a $19 USD/month subscription to the SpeedTree Modeler.
(Scalable wind effects not currently compatible with Unity HDRP)
What makes SpeedTree models more than just a mesh? Click here or see the video below.
User License: Use of this product is subject to the terms of the SpeedTree Model Library Component End User License Agreement