Citron

shoots powerful plasmas at zombies.

Plants Vs. Zombies: The Next Levels
Citron's energy balls now pierce through zombies until it hits its NDS limit.

When planted on an Astral Tile, Citron becomes purple with blue, glowing eyes, and his power is doubled. When plant food boosted while on an Astal Tile, he shoots multiple hyper energy balls.

Almanac: Citron holds the honor of being Espio's personal favorite plant.

Trivia

 * While his almanac says that he is Espio's favorite plant, Espio's based off of the creator of PvZ:TNL, who's favorite plant is actually Thyme Warp. However, since Thyme Warp doesen't have an almanac entry in the game, the title was given to Citron.