There are several sites that contain codes and cheats for Plants Vs Zombies, but the only thing I have ever seen actually "cheat", like unlimited sun, etc, are all trainers. I cannot speak to trainers, they can be unstable at best and can cause the game to crash, but I have put a link below to a site that has codes and unlockable items that you may find useful.
First, you need cheat engine 5.5. then you can get unlimited sun.
you have to hack but it ruins the game
cheat engine 6.2
type to hot
You can't.
plants vs zombies ps3 oao
u get a zen garden whatever that is
9999 plants vs zombies
you can't
yes, but not in codes. you can get a trainer from here: http://www.cheatbook.de/trainer/plantsvszombies.htm
The plants aid you in fighting the zombies in different way.
Yes
enter kill all zombies should give you unlimited lawnmowers
plants vs zombies
Plants vs. Zombies happened in 2009.
type this in when you play: tohot for some reason it doesn't work on my game but it works on other peoples games.
you can download plants vs zombies at gamehouse