Grass mipmaps does not switch.

Hi, I am having problem when I am creating a grass (expecially wheat). unity default mipmaps makes it invisible in distance (it is quite thin and cutoff kills it) so i created custom mipmaps in photoshop using dds file. But it did not solved the problem and then I tried this debug attempt painted all mipmap layer with different color. What I found amazed me. This grass at all distance use mipmap lvl1... it does not even use full quality at very near. And does not switch to smaller ones when needed, leading to again disappearing in distance. Does anyone know what is it, or what caused this problem?

Note: If I use this texture into material and attach it to a cube it works. it is changing color based on distance. But grass not.