The Goldengrave Plant is a Gravestone Plant that can only be found in conveyor-belt levels. It is an advanced terrain modificator that can be planted on the ground and on craters.
This plant never reaches to get unlocked. Also it's sun cost and recharge are also unknown, because it can only appear in conveyor-belt levels. It is generally used to create / delete craters when needed. It is specially used when you need to make a lot of craters at the same time. Since it can be planted on craters, it can also clean an entire column of craters.