Plants vs. Zombies Cheats and Tips

When you complete the following tasks the corresponding trophy will become unlocked at the 'Main' menu.
Unlock Silver Trophy:
Complete Adventure mode once.
Unlock Gold Trophy:
Get ALL trophies in Mini-Games, Survival and Puzzle modes.

During gameplay press R1 + R2 + L1 + L2 and then enter one of the following codes (without the quotes) to activate the corresponding effect. Your Tree Of Wisdom must be a certain height before some codes can be enabled.
Zombies Wear Sunglasses:
Enter the code 'future'
Zombies have Mustaches:
Enter the code 'mustache'
Daisies appear when Zombies Die:
Enter the code 'daisies'
Candy Rains when Zombies Die:
Enter the code 'pinata'
Toggles Zombie call for Brains Sound:
Enter the code 'sukhbir'
Zombies Dance:
Enter the code 'dance'
Zombies Walks Slowly:
Enter the code 'slowboke'
Alternate Lawn Mower Appearance:
Enter the code 'trickedout'