Instructions
Load "Toontown" and enter your estate. Select the "Cattlelog" and purchase the "Gardening" skill for 50 jelly beans. Jelly beans can be earned through mini games and missions.
Travel to the gag shop and purchase one of the gag types. The type of gags your tree produces will depend on which gag type you buy.
Head back to your estate and walk up to a dirt mound around the house. There are eight dirt mounds for you to use for planting trees. These appear when you buy the "Gardening" skill from the cattlelog.
Click the "Plant Tree" button that appears once you are close to a dirt mound.
Select the gag you wish to plant and your character will begin digging. A small sapling will sprout out of the ground.
Water your tree whenever the dirt mound around it turns a yellow color. This indicates the tree is in need of watering.