A native of southern Asia, oranges are the most popular citrus fruit in the world. An excellent landscape accent in southern climates, orange trees will produce fruit from October through January.
Characterized by glossy, evergreen leaves, fragrant flowers and sweet fruits, standard orange trees grow to a height of approximately 30 feet. Semi-dwarf varieties reach 10 to 18 feet.
Hardiness and Range
Orange trees grow in USDA hardiness zones 9 through 11. With protection, orange trees can survive temperatures as low as 20 degrees F for short periods of time.
Sweet orange varieties include, according to the Texas Cooperative Extension, round oranges, navel oranges, blood oranges and acidless oranges. These are further classified as seedy or seedless.
Orange trees require deep, well-drained soil and a soil pH between 6 and 8. Plant orange trees in full sun.
Orange trees must be protected from frosts and freezes. Small trees can be covered with burlap. Larger trees can be misted with water during the entire frost period.
Northern gardeners can enjoy orange trees, too. Dwarf or patio varieties will grow and fruit in pots. Bring indoors before the first frost.
- Texas A&M University: Citrus
- Texas A&M University Agricultural Extension: Oranges
- University of Arizona: Protecting Citrus from Cold
orange trees, citrus trees, types of orange tree
About this Author
Moira Clune is a freelance writer who since 1991 has been writing sales and promotional materials for her own and other small businesses. In addition, she has published articles on eHow.com, GardenGuides.com and VetInfo.com.