princesstree USDA PLANTS Symbol: PATO2
U.S. Nativity: Exotic
Habit: Hardwood Trees
Paulownia tomentosa (Thunb.) Sieb. & Zucc. ex Steud.

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Taxonomic Rank: Magnoliopsida: Scrophulariales: Scrophulariaceae
Synonym(s): princess tree, royal paulownia, royal empresstree
Native Range: China (REHD);

Princesstree is a deciduous tree that grows to 60 ft. (18.3 m) in height and 2 ft. (0.6 m) in diameter. Leaves are opposite, 6 to 12 in. (15.2-30.5 cm) long, heart-shaped (sometimes with three shallow lobes) and hairy on the underside. Flowering occurs in the spring, when showy, 1.5-2 in. (3.7-5 cm) long, tubular, pale-violet flowers develop in upright clusters. The pecan-shaped fruits occur in terminal clusters and split to release thousands of seeds. The thin, fruit capsules persist well into winter. Princesstree usually invades roadsides, stream banks, forest edges and other disturbed areas, but has the ability to invade a wide variety of places. Once established, it is difficult to remove due to prolific seed production and its ability to resprout vigorously. It is native to eastern Asia and was first introduced into North America in the early 1800s for ornamental purposes and as a potential export for carving wood.

Identification, Biology, Control and Management Resources

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


Flower(s);
James R. Allison, Georgia Department of Natural Resources, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
James R. Allison, Georgia Department of Natural Resources, Bugwood.org
Additional Resolutions & Image Usage

Feature(s); flowering mature tree located in Auburn University Arboretum in April
James H. Miller, USDA Forest Service, Bugwood.org
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Feature(s); immature fruit cluster and leaves in June
James H. Miller, USDA Forest Service, Bugwood.org
Additional Resolutions & Image Usage

Stand; Planted stand
Chris Evans, Illinois Wildlife Action Plan, Bugwood.org
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Tree(s); Plantation in Irwin county, Georgia. September.
Chuck Bargeron, University of Georgia, Bugwood.org
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Bark;
Chris Evans, Illinois Wildlife Action Plan, Bugwood.org
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Plant(s); Growing out of a crack in a roadcut
Chris Evans, Illinois Wildlife Action Plan, Bugwood.org
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Tree(s);
Chris Evans, Illinois Wildlife Action Plan, Bugwood.org
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Seedling(s);
Chris Evans, Illinois Wildlife Action Plan, Bugwood.org
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Foliage; June
James H. Miller, USDA Forest Service, Bugwood.org
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Fruit(s); June
James H. Miller, USDA Forest Service, Bugwood.org
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Twig(s)/Shoot(s); June
James H. Miller, USDA Forest Service, Bugwood.org
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Seed(s);
David J. Moorhead, University of Georgia, Bugwood.org
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Seedling(s);
David J. Moorhead, University of Georgia, Bugwood.org
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Tree(s);
Pennsylvania Department of Conservation and Natural Resources - Forestry Archive, , Bugwood.org
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Foliage;
Pennsylvania Department of Conservation and Natural Resources - Forestry Archive, , Bugwood.org
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Foliage; with hat for scale
Pennsylvania Department of Conservation and Natural Resources - Forestry Archive, , Bugwood.org
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Foliage; on a car hood
Pennsylvania Department of Conservation and Natural Resources - Forestry Archive, , Bugwood.org
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Flower(s);
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
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Plant(s); Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada. Vol. 3: 189.
USDA PLANTS Database, USDA NRCS PLANTS Database, Bugwood.org
Additional Resolutions & Image Usage

Seed(s);
Steve Hurst, USDA NRCS PLANTS Database, Bugwood.org
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Control;
Nancy Dagley, USDI National Park Service, Bugwood.org
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Foliage;
Robert Vidéki, Doronicum Kft., Bugwood.org
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Foliage; Velvety underside of Paulownia leaf
Annemarie Smith, ODNR Division of Forestry, Bugwood.org
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Foliage;
Annemarie Smith, ODNR Division of Forestry, Bugwood.org
Additional Resolutions & Image Usage

Fruit(s);
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Additional Resolutions & Image Usage

Bark;
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Additional Resolutions & Image Usage

Bark;
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Additional Resolutions & Image Usage

Fruit(s);
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Additional Resolutions & Image Usage

Fruit(s);
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Additional Resolutions & Image Usage

Fruit(s);
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Additional Resolutions & Image Usage

Fruit(s); in March
James H. Miller, USDA Forest Service, Bugwood.org
Additional Resolutions & Image Usage

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.

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U.S. National Parks where reported invasive:
Antietam National Battlefield (Maryland)
Appomattox Court House National Historical Park (Virginia)
Blue Ridge Parkway (North Carolina)
Chesapeake and Ohio Canal National Historical Park (Maryland, Washington, D.C., and West Virginia)
Colonial National Historical Park (Virginia)
George Washington Birthplace National Monument (Virginia)
Gettysburg National Military Park (Pennsylvania)
Great Smoky Mountains National Park (North Carolina & Tennessee)
Harpers Ferry National Historical Park (West Virginia)
Monocacy National Battlefield Park (Maryland)
Petersburg National Battlefield (Virginia)
Prince William Forest Park (Virginia)
Richmond National Battlefield Park (Virginia)
Rock Creek National Park (Washington, D.C.)
Shenandoah National Park (Virginia)



Invasive Listing Sources:
Alabama Invasive Plant Council
Commonwealth of Pennsylvania, Department of Conservation and Natural Resources, 1994.
Connecticut Invasive Plant Working Group
Faith Campbell, 1998
Georgia Exotic Pest Plant Council
Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007
John Randall, The Nature Conservancy, Survey of TNC Preserves, 1995.
Kentucky Exotic Pest Plant Council
Maryland Department of Natural Resources, 1994
Mid-Atlantic Exotic Pest Plant Council, 2005
Native Plant Society of Oregon, 2008
New Jersey Department of Agriculture, Division of Plant Industry, 2004
North Carolina Division of Parks and Recreation, Department of Environment and Natural Resources, 1998
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
Tennessee Exotic Pest Plant Council
Virginia Department of Conservation and Recreation, 2009