USGS - science for a changing world

Northern Prairie Wildlife Research Center

  Home About NPWRC Our Science Staff Employment Contacts Common Questions About the Site

Wetland Plants and Plant Communities of Minnesota and Wisconsin

GIANT GOLDENROD

(Solidago gigantea Aiton)


Giant goldenrod
Giant goldenrod

ASTER FAMILY (Compositae or Asteraceae)

IND. STATUS: FACW

FIELD CHARACTERISTICS: A clonal, perennial herb 25-200 cm. high. Leaves of the lower and upper stem tend to be similar, triple-nerved, and not rough. The stem is perfectly smooth below the inflorescence, often glaucous, and reddish (may be green in shaded habitats). The stem is not angled. The inflorescence is usually a one- sided, arching panicle. Flowers are yellow. In flower from August to October. This species may hybridize with tall goldenrod (Solidago altissima), an upland species. These hybrids are often sparsely hairy on the stem below the inflorescence. In winter, these species are noteworthy for their conspicuous round insect galls on the stem. Refer to Appendix A for a key to wetland goldenrods.

ECOLOGICAL NOTES: Giant goldenrod is our most common goldenrod in fresh (wet) meadows and sedge meadows and is one of the most common forbs encountered in the upland/wetland transition zone. It also occurs in shaded floodplains, shrub-carrs, wet to wet-mesic prairies, and calcareous fens.

SOURCE: Gleason and Cronquist (1991); and Swink and Wilhelm (1994).


Previous Section -- Fox Sedge (Carex vulpinoidea Michx.)
Return to Contents
Next Section -- Redstem Aster (Aster puniceus L.)

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://www.npwrc.usgs.gov/resource/plants/mnplant/sogi.htm
Page Contact Information: Webmaster
Page Last Modified: Saturday, 02-Feb-2013 06:33:03 EST
Menlo Park, CA [caww54]