Like other peashooting plants, Sling Pea is based on the Pisum sativum. The term sling meaning it can lobs peas that can attack all zombies whole board.
template/sling pea almacnac entry
template/sling pea level upgrade
Plant Food effect
When fed Plant Food, Sling Pea will unleash a barrage of peas that deal very heavy damage to zombies and stun them forr a short time.