Stylized foliage Material Pack for your tree and bush
You con customize the size, color, pattern, shadow and more.
You can use custom mesh but your mesh need to have 1 uvshell for each polygon and each UV shell need to be a 1;1 square wo take all the uv space.
You can do this in Maya with the "Unitize" function in UV\UV editor\Modify\Unitize, you can also do this in Zbrush with the Uv Map\Create\UV Tile
Number of Unique Materials and Material Instances: 11
Number of Textures: 10
Texture Resolutions: 2048*2048
Supported Development Platforms: Windows Yes