This might be a stupid question, but is there a way to permanently get rid of them? There are several pits around the plains area I decided to build in, and due to my lack of forethought, one is within proximity to my house... so, the growths keep spawning and basically wrecking my build - which is, obviously, frustrating - especially when all I get for killing them is 1 tar. I thought maybe raising / leveling the terrain would work but can anyone confirm or deny this method? If anyone has dealt with a similar issue and found a solution, I'd love some suggestions!