Foliage to Terrain Material

Hayhoo (´-´ / )

So what I am basically want to do is to automatically add foliage to my terrain based on the material layer.
I could just do it normally but my problem is that when I want to add my grass foliage manually strange circle like shapes are generated

Anyone knows a solution for this?

47386-unbenannt.png

Jeh ok I found a way to mostly avoid those circles