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Species
Information
- mouse-ear
hawkweed
- Hieracium
pilosella L.
- USDA
Symbol: HIPI
- Oregon
Noxious Weed Designation: A
- Pictures
ALERT: PLEASE CALL 1-866-INVADER IF YOU SUSPECT YOU HAVE FOUND THIS SPECIES
Identification: Perennial; flowers June-July at lower elevations. Grows 4 to 10 inches tall. Similar to the yellow hawkweeds except that it has one flower per stalk.
This species is not yet known to occur in Oregon.
Impacts: This plant produces mats of rosettes that prevent other plants from establishing. It grows in grassy areas and does not tolerate shade. It is becoming a troublesome weed in native meadows, prairies, pastures and lawns.
Biological
Controls: 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.
Oregon
Maps of Mouseear Hawkweed Distribution
Links:
USDA
Plants Database information on mouseear hawkweed
GRIN
Database information on mouseear hawkweed
Oregon Department
of Agriculture information on mouseear hawkweed
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