- See also: Terwilligers 2015 Event's Fertilizer
| "We need more donuts! Do it before Homer eats them all!"
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Fertilizer (Redwood) () is a currency used as a tracker for upgrading the World's Largest Redwood.
Fertilizer can be produced by many characters, depending on the current level of the Redwood, to increase the height of the tree.
The following table describes how much Fertilizer is needed for each upgrade, and what characters are needed.
|Level||Tasks (reward 10 each)||Fertilizer Required|| Cost per Task /|
Total Cost /
Total Rush Cost
|1|| Make Milhouse Watch the Tree|
Make Lisa Disappoint Milhouse With a Friend Hug
|2|| Make Jesse Grass Use Pocket Mulch|
Make Blue Haired Lawyer Send Threatening Letters to Himself
Make Homer Contribute Man Made Emissions
|3|| Make Lisa Ignore Fat Tony's Hole|
Make Jesse Grass Use Pocket Mulch
Make Fat Tony Fill the Hole with "Fertilizer"
|4|| Make Jesse Grass Use Pocket Mulch|
Make Quimby Turn Unsold Krustyland Tickets into Mulch
|5|| Make Jesse Grass Use Pocket Mulch|
Make Dr. Hibbert Order a $12,000 CAT Scan for the Tree
|6|| Make Jesse Grass Use Pocket Mulch|
Make Otto Give Lisa Recipe for "Redwood Tree Brownies"
Make Lisa Apply Otto's Growing Knowledge
|7|| Make Jesse Grass Use Pocket Mulch|
Make Lisa Recruit Community Service Workers to Fertilize
Make Snake Help By Doing Nothing Sketchy
|8|| Make Jesse Grass Use Pocket Mulch|
Make Barney Practice the Drive From Moe's to the Tree
Make Lisa Install a Guard Rail Around the Tree
|9|| Make Jesse Grass Use Pocket Mulch|
Make Lisa Sign Bart's Note in Exchange for Fertilizer
Make Bart Get an A Mentioning Bernie Sanders
|10|| Make Jesse Grass Use Pocket Mulch|
Make Lisa Stand Perfectly Still and Do Nothing