Plantifier

This is an incredible plant that can convert zombies into plants.

Stats
HP: 18

Damage: Technically none, but turns zombies into plants

Projectile: Plantifing Ray

Special: Turns zombies into plants.

Cost: 500 Sun

Recharge: Slow

Strategy
There is literally no time when this is not useful. It can turn anything except boss zombies into plants. For a more in-depth showing of what it creates from zombies, look here.