- 1.1.4Ecological Threat
- 1.2Herbicide Resistance
Abutilon theophrasti is an erect annual herb with a shrub like growth habit. They can reach 7 ft. (2.1 m) in height and are often unbranched. Stems are erect and covered with soft hairs. The plant’s taproots have fibrous root systems.
Leaves are alternate, heart-shaped, and acuminate (gradually tapering to a point). Leaves are approximately 2-6 in. (5.1-15.2 cm) long and wide. They are densely hairy on both surfaces, with toothed margins. Leaves have palmate venation (veins originate from a common point). The leaves emit an unpleasant odor when crushed.
Flowers can be found singly or in clusters. They are yellow with 5 petals and 0.4-1 in. (1-2.5 cm) in diameter. Flowering occurs from July through August
Abutilon theophrasti fruit is a circular capsule fruit about 1 in. (2.5 cm) in diameter. Each capsule contains a ring of 'prickles' around the upper edge. Fruits contain 2 to 3 seeds each.
Abutilon theophrasti is a native of China. Cultivated as a source of fiber and oil; it has escaped cultivation invading orchards, cotton, corn, soybeans, and vegetable fields causing serious damage. Abutilon theophrasti seeds can remain viable in the soil for over 50 years. It is especially invasive in disturbed habitats. It is found across the United States.
Populations of this plant exist in the United States that are resistant to Photosystem II inhibitors (C1/5)
- Weed of the Week - USDA Forest Service
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EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org
State Invasive List - This map identifies those states that list this species on their invasive species list. For more information, visit Invasive.org
Most Troublesome / Most Common Agricultural Weed List
This map identifies those states that consider this species either most troublesome or most common in at least one commodity. For more information, visit the MTMC project page.
|No Data for this state|
|Troublesome or Common weed in one or more crops|
Invasive Listing Sources
- City of Ann Arbor Michigan Parks and Recreation
- Colorado Noxious Weeds
- Faith Campbell, 1998
- Iowa Noxious Weeds
- James Akerson, Shenandoah National Park (personal communication), 2003.
- Michigan Noxious Weeds
- Mid-Atlantic Exotic Pest Plant Council, 2005
- Oregon Noxious Weeds
- Pacific Northwest Exotic Pest Plant Council, 1998
- Washington Noxious Weeds
- WeedUS - Database of Plants Invading Natural Areas in the United States
Other System LinksPlants: ABTH
NPDN Pest: PDAABBB
NPDN Host: 31741
|Common Name Reference:|| USDA, NRCS. 2010. The PLANTS Database. National Plant Data Center, Baton Rouge, LA, USA.|
|Scientific Name Reference:||USDA, NRCS. 2010. The PLANTS Database. National Plant Data Center, Baton Rouge, LA, USA.|