When Dr. Zomboss comes down to throw an ice ball or fire ball, you can use Freeze Shrooms to freeze him. This allows your various pults time to get some damage on Dr. Zomboss himself. Jalapenos will also cause damage to him when he is down to toss a fire or ice ball. The more damage you can do to Dr. Zomboss, the faster and easier it is to end this level. Save at least one Freeze Shroom and one Jalapeno for whatever he tosses.
Press R1 + R2 + L1 + L2 during game play, then enter one of the following codes during game play to activate the corresponding cheat function. Note: Your Tree Of Wisdom must be a certain height before some codes can be enabled.
Press R1 + R2 + L1 + L2 during game play, then enter one of the following codes during game play to activate the corresponding cheat function. Note: Your Tree Of Wisdom must be a certain height before some codes can be enabled.
Type These Codes In At Any Time While Playing The Game. Note: Some codes require your Tree of Wisdom to be of a certain height before they will work.During gameplay press R1 + R2 + L1 + L2
Use the following plant formation with the following items.
In the morning:
0 1 2 3 4 6 80 1 2 3 4 6 80 1 2 3 4 6 80 1 2 3 4 6 80 1 2 3 4 6 8At night:
0 2 3 4 9 X 7 7 7 60 2 3 4 9 X 7 7 7 60 2 3 4 9 X 7 7 7 60 2 3 4 9 X 7 7 7 60 2 3 4 9 X 7 7 7 6The final Boss will launch massive fire balls and ice balls at your plants. They will crush everything in their path except for zombies (basically, all plants in that row). To destroy the ice ball, use a Chili Pepper in that row. To destroy the fire ball, use an Ice Shroom, but also with a Coffee Bean or else it will fall asleep.
 Type mustache during a level after you finish selecting your plants.
 Note: This requires some time and skill. Start by crushing the green ones where plants are, in this order.
Try to smash the vases in columns, then wait for the zombies to get to another vase column and smash them. Your goal is to make them walk as one group and to gather them. They will eventually meet a squash at the start of the lane and it will "squash" them all. This may require several attempts.
 You cannot place the Hypno-Shroom in front of a Disco Zombie because he will raise four zombies, and one of them will be at front of Disco Zombie. Place the Hypno Shroom at his feet the moment he raises the four zombies. By doing this, the shroom will be at the center and Disco Zombie will have to eat it.
 This is easy to accomplish after unlocking Cabbage Pults and other plant catapults. Do not use a peashooter of any kind.
 Towards the middle of the game, more zombies will arrive at the start of each flag wave. Wait for all of them to show up, then place a Cherry Bomb to blow up ten zombies.
 Begin an easy survival day. It will be difficult because you can only plant Mushrooms and Coffee Beans. Focus on planting Sunshrooms. Ignore the first zombies and allow the lawnmowers to take care of them. To defend the Sunshrooms, plant long range Puff Shrooms in front of them. You will mostly have normal zombies and eventually a few Coneheads to contend with. At least two columns of long range defenders will be effective. Although it will require some time, you will eventually succeed.
 Begin by planting pea shooters at the point where the roof's angle ends. Note: This is the one to the left from where the roof is flat. At the other side of the roof, plant Wall-Nuts. Leave one empty spot in front of a Wall-Nut. Take Cherry Bombs and Jalapenos with you for random trouble.
 Repeatedly use Melon-Pults with the frost upgrade and few Cattails. Also have two lanes of Sunflowers with the Double Sunflower upgrade, and at the end two Spikes with the Stone upgrade. Place Tallnuts behind the spikes. The Spikes are very helpful against Gargantuars. They will stop and hammer down the rock spikes while hit them with Frost Melons. With upgraded Gargantuars you will probably require Cherries , Jalapenos or Doom-Shrooms.
 Play the first day in Adventure mode where it is night, or the first day at Survival Night (the easy one). At the start of level, plant Sunflowers on lanes where zombies are not approaching. Ignore the ones they are advancing in and leave the killing to the lawnmowers. When you get enough sun, defend the lanes with Sunflowers. You should be facing only normal zombies. One Peashooter with a Wall-Nut in front should suffice. The hardest part is at the beginning, where you need to gather the sun. Luck will be required because the zombies will spawn randomly.
 Gargantuars will first appear in level 5-8 in Adventure mode. The only other enemies there will be regular and Cone Zombies. Set up two columns of sunflowers, two columns of kernel-pults, then two cabbage-pults. Convert as many of the kernels into Corn Cob missile launchers as desired. At least two are recommended, however the rows with the launchers will require extra defenses to prevent the zombies from breaking through. Once the Gargantuar appears, fire both missiles at it. You do not have to kill the Mite.
 Try to complete this later in the Bowling Wall-Nuts mini-game. Unlock the second bowling mini-game and attempt it there.
Potato mines are obtained after level 1-5, "Wall-nut Bowling". Plant one in the front of your first zombie at the end of the row in level 1-6.
 Play Zombiquarium and do not purchase the trophy for 1,000 Sun. Continue until you have 8,000.
 Growing the Tree of Wisdom for 100 feet requires 94 bags of Tree Food and $245,000. To make this easier, Play the Survival: Endless and Last Stand; use money from Zen Garden; kill Zombie Yeti; and play the mini games Wall-nut Bowling 2 and I, Zombie.
When you are in fog and need light (and you do not have a lantern), use the torch wood if you have the sun. It shows you the space in front of it.
Get all the trophies in Mini-Games, Puzzle, and Survival modes.
The achievements are displayed as an underground list. Scroll through the list and keep going down 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.
Disable full screen mode. Go to your zen garden. After feeding the plants, it will normally take thirty minutes to feed them again. To feed them all, change the system time to an earlier value. This will increase their growth.
To kill Bungees, use Chompers, Squash, Ice Shroom, Jalapeno, or an Umbrella Plant.
If you do not like the cards from Crazy Dave, exit the game and restart. The cards will change randomly.
When there are Pole Vaulters, pick a Walnut and a Chomper and make sure you can dig up plants and have lots of sun.. Put down a Walnut and a Chomper behind it. The Pole Vaulter will go over the Walnut and straight into the Chomper. Then, dig up the Chomper and he is gone.
Press R2 or L2 during game play to quickly collect all the sun that is on screen. You no longer have to move the pointer over the sun.
Complete Adventure mode.
Look at the top left of the almanac and click there. You will now see the imitator.
Complete the following tasks to unlock PlayStation3 trophy rewards.
There are 7 Bronze Trophies, 4 Silver Trophies, and 1 Gold Trophy.
The only way to earn sun in the zombie mini-games is to kill sunflowers. First, put a good zombie for the situation in the lane you want it to go in. Make sure that there are sunflowers planted in that lane. Collect the sun when the zombie eats the flower, then buy more items and eat the brains.