Orange are in season from autumn until spring and include Navel oranges, Temple oranges and Valencia oranges. The Valencia orange is considered to be the best juice orange in the world, accounting for more than half the production of oranges grown. Other oranges include Ambersweet, Hamlin, Pineapple, and Red Navel oranges. Specialty fruit such as tangelos, are available from November to February, and tangerines and grapefruit are available throughout the season.
Oranges: The most commonly-grown varieties of Florida oranges are Navel, Hamlin, Pineapple, Ambersweet and Valencia. The fresh orange season typically runs from October through June. Most oranges in Florida are grown in the southern two-thirds of the state where freezes are rare. However, Polk County near Tampa in the Central part of the state remains the top citrus producing county.
Grapefruit: The most commonly grown varieties of Florida grapefruit are Ruby Red, Flame, Thompson, Marsh and Duncan. The fresh grapefruit season typically runs from September through June.  More information about Florida citrus varieties.