Solidago gigantea L. - Giant Goldenrod


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Solidago gigantea - (image 1 of 3)



Family: Asteraceae


Moist open places, including shaded floodplains, near stream and ponds, moist prairies, and fens.




Nova Scotia and Quebec west to British Columbia, south GA to NM.


Herbaceous perennial to 2 m high. Leaves tri-nerved, lowest leaves about the same size as the lower, abruptly reduced and bracteate in the inflorescence, not leafy in axils, subtending leaves not exceeding the inflorescence. Heads in terminal panicles. Flowers bright yellow; involucres 2-3 mm, stem nearly or quite glabrous below the inflorescence.


Flowers August to September

Wetland indicator: Facultative Wetland

Very much like S. canadensis but mostly glabrous below the inflorescence. Also called Smooth Goldenrod or Late Goldenrod, it is synonymous with S. serotina.


Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second Ed.

The New York Botanical Garden. Bronx, NY


Swink, F. and G. Wilhelm. 1994. Plants of the Chicago Region.
Indiana Academy of Science. The Morton Arboretum. Lisle, Illinois.




 Michael Hough 2009