Grainsaw

Grainsaw is a new plant in Futuristic Factory Fearhouse. It is unlocked after completing Day 4.

It ferociously cuts zombies, sending the body parts flying. The body parts can hit zombies, injuring them.

Plant Food
It shoots 5 ripping chainsaws on random tiles.

Trivia
This was actually the 2nd plant Kirbybot-3000 ever made.