Is there a way to find the class names of a plant/crop? I'm trying to exclude berry bushes from plant mega pack (since they drop themselves with easy harvesting on).

This is something that absolutely needs work on my end. I'll likely switch it from classname (like net.minecraft.block.BlockCrop) to modid:block to make it easier for users.

In 1.14 this has changed - I'll be backporting this feature to 1.12 shortly.

This should be much more clear to use in 195cb1a