- Activate Cheats
While you are playing this game, press LB, RB, LT, RT to display the cheat entry menu. Then, enter one of the following codes to obtain the corresponding effect. Notice: Your Tree Of Wisdom must be a certain height before some codes can be activated.

Effect	Code
Alternate Lawn Mower appearance	trickedout
Zombies walk slowly	slowboke
Candy rains when zombies die	pinata
Zombies dance	dance
Toggle zombies call for brains sound	sukhbir
Zombies have mustaches	mustache
Zombies wear sunglasses	future
Daisies appear when zombies die	daisies

- Gold trophy
Get all the trophies in the Mini-Games, Puzzle, and Survival modes to get the Gold trophy.

- Achievements
Do the following things to obtain the corresponding Gamerscore points:

10 Points
Soil Your Plants	Plant your first 10 peashooters.
Crash of the Titan	Overcome your first Gargantuar.
Shopaholic	Go trunk diving and spend at least $25,000 on Crazy Dave's Twiddydinkies.
Nom Nom Nom	Stop the horde using only the Sunflower, Wallnut, and Chomper on any level.
15 Points
Versus vs Versus	Go on a 5 game winning streak in VS. mode.
Close Shave	Be victorious in any level after all 5 lawnmowers have been used.
Smarty Branches	Grow the Tree of Wisdom to at least 100 feet.
20 Points
ZFF's 4 Evr	Bowl a winner with a friend in Co-Op Wall-Nut Bowling.
Explodonator	Blast 10 zombies at once with a Cherry Bomb!.
25 Points
Home Lawn Security	Finish adventure mode.
Master of Morticulture	Acquire all 49 plants in the game.
Alive and Planting	Survive 40 waves of pure zombie ferocity.

- Hidden achievement list objects
The achievements are displayed as an underground list. Keep scrolling through the list to see various hidden objects including a zombie, the bookworm from Bookworm, jewels from Bejeweled, a unicorn fossil, and finally Chinese zombies staring back down the hole.

- Silver trophy
Successfully complete Adventure mode to get the Silver trophy.

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