For more detail this asset from the Unity Asset Store: Click Here
This is a paid asset, but now you can download HQ Photographic Textures Grass Pack Vol.1 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.
HQ Photographic Textures Grass Pack Vol.1 v1.6
HQ Photographic Textures Grass Pack Vol.1
This Pack contains of 80 Unique High Quality Grass Textures directly settled for using in Unity 5 (Alpha Blending adjusted, Perfect Background Color & Alpha Transparency).
Most of the files are in 2K(2048×2048).
By using the Unity 5 Native Builds, Terrain Editors, Grass Shaders or any others Assets, the Textures are compatible and can be edited too in your own 2D/3D Softs.
The Vol.2 is available here.
For more informations, support:
Unity Forum Thread
Important: The Screenshots are made with others Assets, only the Grasses are included on the Pack.
Enjoy using them in Unity Games!