HE Flak Shroom

HE Flak Shroom is a even more powerful variation of the normal Flak-Shroom. Armed with HE (High Explosive) Shells, this plant can pepper air-based threats with painfully large amounts of damage. The shrapnel produced also damages zombies below the explosion, making it slightly more survivable. The plant can also withstand harrowing amounts of damage, making it a partially-defensive plant.