Dead Grass

Dead grass.

Dead Grass is the result of grass blocks dying because of radiation, either from an unshielded nuclear reactor, nuclear waste dump site, or a nuclear/dirty explosion. They will not turn into grass again no matter how much time passes. They must be either mined up and replaced to allow for grass to regrow.

Spreading seeding slurry with a chemthrower to dead grass will revive it and turn it into grass again.