Custom Dirt Blocks 1.15.2?

[Misterwizard28]

Hows it going Im relatively new to the modding world, been having fun with creating my own custom blocks using deferred registries. Ive been trying to figure out how to make blocks i can put grass and plants on if anyone could explain a little about the .canSustainPlant(state, world, pos, facing, plantable) it would be much appreciated because i'm stuck. 

[trashraccoon42]

I'd love the answer to this question, couldn't find much info online about canSustainPlant

[Draco18s]

Have you tried looking at the vanilla implementation?
Its down around line 820 in Block.java and is really pretty straight forward.