Blue Chocolate Egg Trees are a type of garden tree that produces the homegrown fruit, Homegrown Blue Chocolate Eggs. They can be grown in a pet's front or back garden by purchasing the limited time Easter Egg Tree Seed at the Garden Shop and planting in a pet's garden. (Note: the Easter Egg Tree Seed randomly selects the color of the Chocolate Egg tree - there is an equal chance of getting a Blue Chocolate Egg Tree, a Pink Chocolate Egg Tree, or a White Chocolate Egg Tree.)
These trees were introduced to the Facebook version of Pet Society on March 18, 2010.
After planting, it will take 72 hours for the the Blue Chocolate Egg tree to reach maturity. Afterward, the tree will begin producing blue chocolate eggs, one egg at a time, randomly. A pet can have up to three total fruits on the tree at once. Homegrown Blue Chocolate Eggs from this tree can be used to fish at the Pet Society Pond. So far, it appears these fruits will only catch common fish and fishing junk.