Pool

The Pool is the third area and the stage of the third set of 10 levels in Adventure Mode. It is the backyard of the house in which the player lives, but unlike the front lawn (where the Day and Night stages take place) there are six rows instead of five. This may be so because there would be 1 water lane instead of 2 it would be easier. The middle two rows are the pool. Before the player buys Pool Cleaners, Lawn Mowers in the pool rows will kill only the first zombie that steps out of the water, and then splash into the pool. During the final wave in any pool level, Ducky Tube Zombies of all varieties (normal, Conehead, Buckethead) will surface from a 4 by 2 rectangle at the far right of the pool with or without seaweed on their heads. thumb|300px|right|The music of the pool stage

On the back side of your backyard, there are different ladders placed on the fence.

New Plants
Because of the watery aspect of this area, some new plants and zombies are encountered. On the defensive side, the Lily Pad was added so non-aquatic plants can be planted in the water. Also, Squashes, Threepeaters, Tangle Kelps, Jalapenos, Spikeweeds, Torchwoods, and Tall-nuts are unlocked.

New Zombies

 * Ducky Tube Zombie
 * Snorkel Zombie
 * Dolphin Rider Zombie
 * Zomboni
 * Zombie Bobsled Team (If ice trail is left from Zomboni)

Trivia

 * In any Survival Mode Pool levels in which they appear, Dancing Zombies will only be able to summon three Backup Dancers, as a fourth would be impossible to summon inside the pool.
 * The music that plays during this stage is called "Watery Graves".Coool!.JPG
 * It is unknown how Vehicle Zombies are able to pass through the fence onto your backyard.
 * In the XBLA version, there are no ladders leading to the Pool area, but instead, the zombies destroy the fence.
 * If a Ducky Tube Zombie is killed before it enters the pool, it will fall onto the surface of the pool just as a normal zombie will do on the lawn.
 * The pool music is remixed for the music video Zombies on Your Lawn.
 * In the last level on the pool stage, the Adventure Mode music is Ultimate Battle, while the Quick Play version plays the normal Pool music.
 * If the Ice-shroom was timed right when the final flag of a level starts, the Ambush Zombies won't surface. It is because the Ice-shroom freezes the pool into ice, making it impossible for the ambush zombies to surface.