Snapdragon

Snapdragon is a plant that emits a wall of flames that hits zombies in three lanes at once.

The Snapdragon may be based on the Dracaena Gardius

Powers
The Snapdragon's main power is to breathe fire that causes damage in 6 adjacent tiles.

The Snapdragon's plant food upgrade is that he grows wings and releases a powerful burst of fire in a 3x3 square in front of him which kills all zombies in those spaces.

Trivia

 * The Snapdragon's fire breathing may be a reference to the dracaena gardius' acid that it uses to prey insects.