Tree of Wisdom is a purchasable feature in Plants vs. Zombies. When fed Tree Food, it gives the player large tips, as it is different from the classic help menus. The player can grow it to a very high height, although there are no rewards for growing the Tree of Wisdom past 1000 feet. The player can access it by clicking on Zen Garden and going past the Aquarium Garden, but it must be bought first.
When the player grows the Tree of Wisdom to a certain height, they are allowed to use certain Cheat Codes. After growing Tree of Wisdom to 100 feet, one will be able to use the "daisies" cheat, after 500 feet, the "dance" cheat, and after 1000 feet, the "pinata" cheat.
You know that zombies emerge from gravestones, right? So what's stopping you from using Grave Busters to get rid of them in Survival: Night? Is it pride?
Grave Busters, eh? Pick 'em only when you can see graves on the right side of the screen along with the zombies. That's what I do.
Stinky the Snail sure loves his chocolate. Maybe loves it a little too much, you know? He won't sit still for an hour after he's had some.
The Imps in I, Zombie seem weak. But they're speedy and great for fetching that last brain when you've cleared the rest of the opposition.
It's tempting to feed all your chocolate to Stinky the Snail. He's such a chocolate hog. But remember: Zen Garden plants like chocolate too!
Often the question is asked: where do you find chocolate? A better question would be: where DON'T you find chocolate? It drops in every game mode!
Tired? Depressed? Ladders on Tall-nuts getting you down? A quick Magnet-shroom will whisk your cares away!
What's cheaper than free? Nothing! That's why Puff-shrooms are essential on all night levels!
When I was just an acorn my grampa told me, 'Son, Vasebreaker puzzles are much easier if you break the vases on the right side first.'
I had a dream. In it, Cattail spikes popped balloons and dropped zombies to the ground. I don't know what it means.
Chompers and Wall-nuts work exceedingly well together. It's no surprise, considering they were roommates in college.
Do multiple Snow Peas in a row slow zombies down more than just one? The sad but truthful answer is 'Nay.'
The number of coins you receive in Wall-nut Bowling is proportional to how cool you are as measured by how many ricochets per nut you can pull off. (pull off more ricochets in Wall-nut Bowling 2)
Please do not tap in the glass! Or actually, go ahead; right-click on your Aquarium Garden or during Zombiquarium to deafen your underwater creatures.
Dancers in I, Zombie may seem expensive, but in the right situation they're worth every penny.
General
Thank you for feeding me! I'm out of new wisdom for now, but I might have more if you grow me tall enough!
Thank you for feeding me! I've given you all of my wisdom, but you can still grow me taller!
History repeats itself but it always gets the details wrong.
I experience time at a vastly slower rate than you!
So I've heard about this 'winter' dealie. Can't say I'm looking forward to it.
Courage is easy; dedication costs extra.
If the past, present, and future all simultaneously exist as "block time", surely the experience of "now" can only be an elaborate illusion?
If you're mistaking the forest for the trees, just remember: A forest is a collection of individual trees and not the other way around.
My xylem is tingling!
I feel a spurt coming.
I think I've seen that cloud before.
That cloud look just like a vast aggregation of water droplets.
Oops sorry - I think I just gave up some oxygen.
Don't mind me. I'll just be over here, growing.
Mmm, I could surely use some yummy fertilizer!
At this stage I lack worldy knowledge.
You can get a lot of wisdom just from standing around.
Gosh, I can grow leaves!
I'm metabolizing like crazy!
Have you met my cousin Yggdrasil? Very big in Sweden. Many fans.
When you've been around for as long as I have, you sleep less and hallucinate more.
I think I'm perennial!
After a careful observation I've deduced that it is the Earth that revolves around the Sun not the reverse as it appears.
I really appreciate all the cash you're spending on fertilizer!
I'm taking sociology in an online college. Very helpful.
I'll never get why you animals spend all day moving around like you do.
One of the random phrases it says is "My xylem is tingling!" A plant's xylem is part of a plant in its wood that transfers water and other nutrients into the plant.
2,147,483,647 feet is the maximum height of the Tree of Wisdom. Growing it past at this height will result in it "growing" to its minimum negative height (-2,147,483,648). It takes an extremely long time to get its height back to 0 without hacking.
This is because growing it higher results with integer overflow. The number 2,147,483,647 (231-1) is the maximum value for a 32-bit signed integer in computing.
It is unknown how the Tree of Wisdom talks and sees, as it has neither a visible mouth nor eyes.
In the Nintendo DS version, when the Tree of Wisdom is not growing or giving out wisdom, Crazy Dave repeatedly says, "This tree keeps growing! It also won't shut up!".
The Tree of Wisdom is a selectable icon on the Limbo Page, probably suggesting that the Tree of Wisdom was meant to be separate from the Zen Garden. Once the Tree of Wisdom has been accessed (via the Limbo page in some versions), the trophy icon indicating that the level has been passed appears in the corner.
The Tree of Wisdom is not on the iOS version because the player is unable to type the codes he or she gets on the iPod, iPhone, or iPad.
A rare glitch that happens on the PlayStation Vita version is free tree food. The player will start off in the Zen Garden with the tree when he or she first purchases it. Crazy Dave will then slide in and give him or her five packs of tree food to get him or her started. After growing quite a bit, Crazy Dave still slides in, giving the player five packs of tree food, even though the only time he was supposed to do this was at the start. Furthermore, once the player is done with the five packs, he or she can still feed him one more time. This will happen again after visiting another Zen Garden or quitting and going back to the tree. The only known method to stop this is to go to the settings menu and delete all extra data in Plants vs. Zombies. The glitch will then go, at the expense of no extra data. Ignoring this glitch, or at least making use of it, is highly recommended.
If the player types one or more of "daisies", "dance", and "pinata" before the Tree of Wisdom says he or she can (at 100, 500, and 1000 feet, respectively), the codes will not work, and he or she will get a message saying, "You don't have a tall enough Tree of Wisdom for that!", even when the Tree of Wisdom has not been purchased by the player.