Cattail

shoots spikes at zombies.

Plants vs. Zombies:The Fall of The World
They are no longer upgrades.

Almanac: Cluck cluck moo! Oink Woof Meow Howl Cockadoodle-doo! She sure loves making animal sounds.

Trivia

 * is the only aquatic plant unlocked on a non-aquatic level.
 * That was after Water Puddle was unlocked.

Plants Vs. Zombies: The Next Levels
Cattail remains unchanged.

Almanac: 's job just feels so good. She loves the feeling of bombarding zombies with spikes, popping balloons, and defying what cats usually do. She's also proud of being one of the creator's favorite plants.

Trivia

 * Cattail's almanac references that Moon Snail, the creater of TNL, has Cattail as one of his personal favorite plants.
 * Cattail's top header mentions "Likes playing Bloons Tower Defense 5". Bloons Tower Defense 5 is a Tower defense game where you pop balloons to make sure they don't get to the end.