For more detail this asset from the Unity Asset Store: Click Here
This is a paid asset, but now you can download Realistic Tree Pack 2 (Corylus Avellana) 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.
Realistic Tree Pack 2 Corylus Avellana
“If possible, please buy the package to support the developer”
This package contains LOD transitions and fully support Unity Wind Effects
This map contains 1024, 512, 256 Diffuse, Normal texture map.
it contains 3 LOD’s for each Tree
for more assets please check here
To get the Quality of the plant animation which you find in the video is by assigning the shader in the following link.
. The default Tree shader in the unity will work fine. for the best vertex animation performan you can use the shader which i gave above.