Posidonia is eighth plant obtained in the Plants vs. Zombies Online: City of Atlantis, in Plants vs. Zombies Online. It is unlocked on Day 25. It shoots trident to hit the three strongest zombies. When Poseidon Zombie is on field, it stops attacking to prevent Poseidon Zombie from using its powers.
Fires three tridents to hit the three strongest zombies, and prevents Poseidon Zombie from splitting the sea.
Sun Cost: 150
Range: Full Board
Prevents Poseidon Zombie from using his powers, so long as he's planted on the lawn. If there are no Poseidon Zombies on field, he'll shoot tridents that hit the three strongest zombies.
Special: Prevents Poseidon Zombie from using his powers.
Special: Can be planted underwater.
Once the plants clear out the zombies from Atlantis, Posidonia wants to rule. The plants definitely agree. He's a great leader, who's kind and caring. The only problem is, he's not the brightest plant around.
Plant Food Effect
Shoots three sets of three tridents to hit the three strongest zombies.