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USDA Symbol: HIPI
ODA rating: A
mouse ear hawkweed risk assessment
Noxious weed listing process
Oregon mouse-ear hawkweed distribution
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||Images courtesy of Ed Alverson, TNC.
If images are downloaded from the ODA web site please be sure to credit the photographer.
Mouse-ear hawkweed is a perennial weed that has leaves with distinctive white midveins and that are covered with long white hairs. It has stolons like strawberries and a fibrous root system. Flowers are produced on a long, leafless stalk and are covered with stiff dark hairs. Flowers occur in clusters of at least two on the top of the flower stalks and are bright yellow in color. Flowers resemble those of a dandelion.
This plant produces mats of rosettes that prevent other plants from establishing. It displaces native vegetation and decrease biological diversity. It displaces desirable pasture species. It is very tolerant of low soil fertility and over-grazing. It grows in grassy areas and does not tolerate shade. It is becoming a troublesome weed in native meadows, prairies, pastures and lawns.
Distribution in Oregon
For a collection of spatial information on the distribution of this plant in Oregon go to Oregon WeedMapper.
Biological control agents are not used on "A" listed weeds in Oregon. If this weed is found in the state it will be managed for eradication or containment.