Helianthus tuberosus L.
Coefficient of Conservatism: 6
Coefficient of Wetness: 0
Wetness Index: FAC
Physiognomy: Nt P-Forb

A native species of river banks and floodplains in our area, but also escaped from cultivation and widespread along railroads and roadsides, in fields and fencerows, at old homesites and vacant lots, and in other disturbed places; found in both wet and dry ground.

This sunflower was once grown commonly for its crisp tubers, produced on the rhizomes, which can be eaten raw or cooked. Fragmentary specimens lacking information on habit of underground parts are easily confused with H. annuus, but the latter has larger heads (on all but very small plants) and a tendency to relatively broader leaves.


Allegan County
Baraga County
Bay County
Benzie County
Berrien County
Calhoun County
Cass County
Cheboygan County
Delta County
Dickinson County
Emmet County
Hillsdale County
Houghton County
Ingham County
Ionia County
Isabella County
Kalamazoo County
Kent County
Lapeer County
Lenawee County
Livingston County
Macomb County
Marquette County
Mason County
Mecosta County
Menominee County
Monroe County
Muskegon County
Oakland County
Oceana County
Ontonagon County
Saginaw County
St. Clair County
Washtenaw County
Wayne County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. November 29, 2022. https://michiganflora.net/species.aspx?id=359.