I have observed Upland plants from this mod, specifically Ryegrass and Eagle Fern so far, generating literally atop modded plants, specifically Gardens from Pam's Harvest Craft and Sea Oats from Oceanic Expanse.

I have to assume that this is due to the config for these plants containing "soil":["material:grass'], and the mod detects others mod's grass plants as suitable spawn conditions where it was probably intended to be limited to grass blocks only.

The scope of "material:grass" is too large, or does not exclude non-solid blocks, but according to the wiki it is the only option to have greenery plants generate on grass blocks so therefore at this time I have to just live with it.

Is it possible to add another criterion to the plant generation which limits generation exclusively to solid blocks?