Stone Pine Trees are a type of garden tree that produces the homegrown fruit, Homegrown Stone Pine Pinecones. They were allegedly TWS limited, and could be grown in a pet's front or back garden by purchasing and planting a normal tree seed from the Garden Shop between the dates of May 28, 2010 and June 7, 2010. However, they are still available as of September 2011.
This tree was introduced to the Facebook version of Pet Society on May 28, 2010.
After planting, it will take 72 hours for the the pine tree to reach maturity. Afterward, the tree will begin producing fruit, one pine cone at a time, randomly. A pet can have up to three total pine cones on the tree at once.
Homegrown Stone Pine Pinecones from this tree can be used to fish at the Pet Society Pond. These fruits will catch common fish and fishing junk.