Prepared by Jennifer L. D’Appollonio, Assistant Scientist, University of Maine, Orono, ME 04469. March 2011.
Scientific name: Hieracium pilosella L.
Common name(s): mouseear hawkweed
Link(s): USDA PLANTS Profile
Images: (to see enlargements [PC]: click on image, then right click and choose “view image”)
-considered noxious in some states
-generally flowers May to July in ME
-generally fruits July, August in ME
-can establish in low nutrient and over grazed sites
-meadows and fields
-native to Europe
-introduced to eastern and northwestern North America
Hansen, R.W., S.B. Hansen and E.A. Osgood. 1991. Reproductive phenologies of selected flowering plants in eastern Maine forests. ME Agric. Exp. Station Tech. Bull. 143. 17 pp.
Heinrich, B. 1976. Flowering phenologies: Bog, woodland, and disturbed habitats. Ecology. 57(5):890-899.
Go Botany. “Hieracium Pilosella L.” Hieracium Pilosella (Mouse-Ear Hawkweed): Go Botany, 2021, gobotany.nativeplanttrust.org/species/hieracium/pilosella/.