The Tree of Life happens every 28 days (starts on Mondays at 08:30 UTC) during the middle of a Farm Contest season. You can find the next event in the Coming Up section on the home page. (If you don't see it there, it's because there are more than 12 events before the next Tree of Life.)
The Tree of Life is a collection of 20 tasks spread across 4 areas of your farm. The Tree represents this as 4 colored branches of flowers on the Tree, with each flower representing a task. You must complete the 'lower' (starting) flowers to reveal the tasks of the next flowers (or see the table below).
As you progress through the tasks, you earn rewards and tree token, which unlock more rewards across the bottom of Tree of Life interface. Some tasks split into 2 flowers. You must complete both flowers to move on to the next flower.
The tasks and rewards are dependent on your player level when the event starts. If you level up during an the event, your tasks and rewards do not change.
Every player does the same set of tasks, but the quantity of products in each task increases as your player level increases. Players level 70 and below have 4 different or modified tasks because they don't have the available buildings.
The 7 large rewards across the bottom on the interface are earned at 50, 150, 300, 500, 800, 1250, 1850 tree tokens.
The list of tasks below will change based on the farm level you select. I will keep building the table to include rewards and points as time allows. I'm also still looking for 26 tasks.
Select your farm level to fill in the table:
First Flower -> 25
Harvest 60 Fields of Corn
Collect 550 Eggs
Second Flower Right Side -> 50
Finish Production of 3 Milk
Finish Production of 8 Cheese
Second Flower Left Side -> 50
Finish Production of 3 Pigs
Third Flower Right Side -> 100
Finish Production of 2 Apples
Collect 110 Fertilizer
Third Flower Left Side -> 100
Collect 300 Almonds
Fourth Flower -> 175
Collect 420 Wildflowers
Harvest 20 fields of Dandelions
First Flower -> 25
Give the Dog 5 treats
Second Flower Right Side -> 50
Give the Dog 5 treats
Second Flower Left Side -> 50
Collect water 2 times
Third Flower -> 100
Cultivate something 12 times in the Nursery
Fourth Flower -> 150
Give the Dog 6 treats
First Flower -> 50
Spend 50,000 farm dollars
Fill 3 ship crates
Second Flower -> 150
Spend 75,000 farm dollars
Send 15 market contracts (main farm)
Third Flower -> 150
Earn 75,000 farm dollars
Fill 6 ship crates
Fourth Flower -> 200
Earn 100,000 farm dollars
Send 1 complete Ships
First Flower -> 25
Go fishing 15 times
Fry 1 fish (place in pan)
Second Flower -> 50
Go fishing 20 times
Prepare 5 fish recipes
Third Flower Right Side -> 100
Go fishing 20 times
Fry 6 fish (place in pan)
Third Flower Left Side -> 100
Go fishing 30 times
Prepare 10 fish recipes
Fourth Flower -> 150
Fry 12 fish (place in pan)
Prepare 20 fish recipes