Mimic plants were plants used to make useful objects that could be used to make explosives, launchers, or flower trampolines. They were 'standing' in the ground when Ratchet first saw them, and were made to work by using the Sprout-O-Matic, which made them walk with you to the Electro-soil patch to be watered and planted there. Sometimes enemies killed them, but it respawned at the place where you sprouted them.