The Orlando Tangelo Tree is a cold tolerant citrus created by crossing a grapefruit with a tangerine.
 
The Orlando Tangelo Tree is a cold-tolerant citrus created by crossing a grapefruit with a tangerine. The result is a tree that produces medium-sized fruit that are sweet and easy to peel like tangerines, but lager and juicier than a traditional mandarin. These trees can withstand brief temperature drops to as low as 20 degrees F. Orlando Tangelo Trees can be grown in the ground in USDA zones 8 to 10, and in a pot in colder climates where overwintering indoors is necessary.