Night

The Night area is the second stage of Adventure Mode and the setting of the 10 levels after the daytime levels. It is exactly like the Day levels in layout except that it takes place in the nighttime; therefore mushrooms do not fall asleep and Sun does not fall from the sky. Because of the lack of falling sun, it is much harder to defend your home without using mushrooms, Sun-shrooms taking the place of Sunflowers and Scaredy-shrooms taking the place of Peashooters. Also, during this stage Graves will appear at the beginning of the level in random points on the half of the lawn farthest from your house. They cannot be planted on, and Zombies surface from them during the final wave of a level.

New Plants
Mushrooms are the key to Night levels. The most important mushrooms introduced in these levels are the Puff-shroom; which costs nothing and is vital because of the lack of sun, and the Sun-shroom; which is a cheaper version of the Sunflower. The other plants introduced are Fume-shrooms, Grave Busters, Hypno-shrooms, Scaredy-shrooms, Ice-shrooms, and Doom-shrooms.

New Zombies
New types of never-before seen zombies appear on this level, but ones from Day levels remain. The new zombies are Newspaper Zombies, Screen Door Zombies, Football Zombies, Dancing Zombies, and Backup Dancers. A helpful trick for the Dancing Zombie is to use a Hypno-shroom on him as fast as you can to avoid non-hypnotized Back-up Dancers.