The Cotton Candy Forest is a large area in the Land of Ooo that is covered with pink cotton candy trees. It encompasses much of the Candy Kingdom and reaches far enough to border the Desert of Doom. The Cotton Candy Forest is inhabited by the Frog, the only known portal to Lumpy Space.
The forest has many paths that connect the Candy Kingdom to several locations throughout the Land of Ooo. Some notable buildings and structures in the forest are Lady Rainicorn's house and the Royal Tart Path. Although the forest is generally colorful and vibrant, it has seen periods of devastation such as when baby Flame Princess burned several trees in "Earth & Water." In addition, "Lemonhope Part 2" suggests that much of the Cotton Candy Forest will be cleared in what is likely a thousand years into the future.