trifoliate orange USDA PLANTS Symbol: POTR4
U.S. Nativity: Exotic
Habit: Hardwood Trees Shrub or Subshrub
Poncirus trifoliata (L.) Raf.

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Taxonomic Rank: Magnoliopsida: Sapindales: Rutaceae
Synonym(s): hardy orange
Native Range: Temp. Asia (GRIN);

Trifoliate orange is a deciduous shrub or small tree that grows from 8-30 ft. (2.4-9.1 m) in height. The leaves are alternate, compound (trifoliate), up to 2 in. (5.1 cm) long and have a winged petiole. The twigs are green with stout, 1 in. (2.5 cm) long thorns. The bark is conspicuously green-striped. Spring flowers are white, 5-petaled, 1-2 in. (2.5-5.1 cm) in diameter and showy. Fruit is a 1.5-2 in. (3.8-5.1 cm) diameter, dull yellow, sticky orange (berry). Trifoliate orange invades woodlands, forest edges, fence rows and urban green spaces.

Selected Images from Invasive.orgView All Images at Invasive.org


Twig(s)/Shoot(s);
John D. Byrd, Mississippi State University, Bugwood.org
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Fruit(s);
John D. Byrd, Mississippi State University, Bugwood.org
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Foliage;
James H. Miller, USDA Forest Service, Bugwood.org
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Stem(s);
James H. Miller, USDA Forest Service, Bugwood.org
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Flower(s);
James H. Miller, USDA Forest Service, Bugwood.org
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Fruit(s);
James H. Miller, USDA Forest Service, Bugwood.org
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Flower(s);
James H. Miller, USDA Forest Service, Bugwood.org
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Plant(s); fruiting
James H. Miller, USDA Forest Service, Bugwood.org
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Plant(s);
James H. Miller, USDA Forest Service, Bugwood.org
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Plant(s); in flower
James H. Miller, USDA Forest Service, Bugwood.org
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Plant(s);
James H. Miller, USDA Forest Service, Bugwood.org
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Fruit(s);
John D. Byrd, Mississippi State University, Bugwood.org
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Plant(s);
Nancy Dagley, USDI National Park Service, Bugwood.org
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Plant(s);
Nancy Dagley, USDI National Park Service, Bugwood.org
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Infestation;
Nancy Dagley, USDI National Park Service, Bugwood.org
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Plant(s);
Nancy Loewenstein, Auburn University, Bugwood.org
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Fruit(s); fruits and thorns in August
James H. Miller, USDA Forest Service, Bugwood.org
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Fruit(s); November
James H. Miller, USDA Forest Service, Bugwood.org
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Fruit(s); August
James H. Miller, USDA Forest Service, Bugwood.org
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Seedling(s); seedling and fruit in November
James H. Miller, USDA Forest Service, Bugwood.org
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Stem(s); May
Steve Manning, Invasive Plant Control, Bugwood.org
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Fruit(s); seeds
James Johnson, Georgia Forestry Commission, Bugwood.org
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Infestation; Right side has been mowed while the left side was untouched
James Johnson, Georgia Forestry Commission, Bugwood.org
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Infestation; Poncirus trifoliata has invaded into the edge of this pasture and is spreading.
James Johnson, Georgia Forestry Commission, Bugwood.org
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EDDMapS Distribution:
This map is incomplete and is based only on current site and county level reports made by experts and records obtained from USDA Plants Database. For more information, visit www.eddmaps.org
 


State(s) Where Reported invasive.
Based on state level agency and organization lists of invasive plants from WeedUS database.

U.S. National Parks where reported invasive:
Vicksburg National Military Park (Mississippi)



Invasive Listing Sources:
Alabama Invasive Plant Council
Georgia Exotic Pest Plant Council
Mid-Atlantic Exotic Pest Plant Council, 2005
Reichard, Sarah. 1994.  Assessing the potential of invasiveness in woody plants introduced in North America. University of Washington Ph.D. dissertation.
South Carolina Exotic Pest Plant Council