Osteen is from Merritt Island, FL and was named after S.A. Osteen on whose property the seed was planted in 1935 and fruited in 1940. It is believed to have been a seedling of Haden.
The fruit are oval-oblong, medium-to-large in size with a raised stem end, and turn a purple color well before maturity that changes to a beautiful bright red when the fruit ripens. The flesh is yellow, with only minimal fiber, and possesses a very nice medium-bodied classic flavor.
The seed is monoembryonic.
The trees are medium growers with spreading canopy. Osteen is a heavy producer and has become adapted commercially overseas, including Spain. Plantings still exist on Merritt Island as well.
It is a late-season mango and we obtained a few trees in 2017 for evaluation.