Stage 3-5

This is yet ANOTHER minigame. Defend your shins!

Non-DS

 * Peashooter
 * Wall-nut
 * Cherry Bomb
 * Lily Pad

DS

 * Peashooter
 * Wall-nut
 * Lily Pad

Non-DS

 * Zombie
 * Conehead Zombie
 * Football Zombie
 * Ducky Tube Zombie
 * Snorkel Zombie

DS

 * Every Single One![citation needed]

Non-DS
Plant Peashooters where you need them. Wall-nuts need to be used against Footballs and Snorkelers. Use Cherry Bombs liberally, and spread your Wall-nuts evenly throughout. This level isn't necessarily a cakewalk.

DS
In the DS version of the game, Level 3-5 is entirely different. It is a Mini-game called Heat Wave. You have four Peashooters, two Wall-nuts and four Lily Pads that you have to move around to kill the zombies. You can't plant any other plants; to beat the level, you need to pay constant attention to your plant's state, and repeatedly shout into the mic to wake them up. An orange-tinted Peashooter works as a Gatling Pea, and a brown-tinted Peashooter is too tired to move. Conehead Zombies and Football Zombies appear in addition to the normal zombies. Stall if necessary with the Wall-nuts, but try not to let plants get eaten, even though they are replaceable.

Outcome

 * Jalapeño
 * Stage 3-6