Armoracia rusticana G. Gaertn., B. Mey. & Scherb.
Coefficient of Conservatism: *
Coefficient of Wetness: 0
Wetness Index: FAC
Physiognomy: Ad P-Forb

A native of Europe, escaped from cultivation to roadsides and disturbed ground, especially wet ditches and shores. First collected in 1860 in Washtenaw Co.

Cultivated for the well-known condiment prepared from the large fleshy roots. The large lower leaves may be 2.5–3 dm broad and resemble those of Silphium terebinthinaceum. Seeds and fruits apparently never developing in Michigan; the spread thus entirely by vegetative means.


Baraga County
Berrien County
Cheboygan County
Emmet County
Gogebic County
Gratiot County
Ingham County
Isabella County
Jackson County
Kalamazoo County
Kent County
Keweenaw County
    Including Isle Royale
Lapeer County
Leelanau County
Lenawee County
Luce County
Mackinac County
    Only on Bois Blanc, Mackinac, Round Islands
Marquette County
Mecosta County
Midland County
Oakland County
Ottawa County
Schoolcraft County
Shiawassee County
St. Clair County
Van Buren County
Washtenaw County
Wayne County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. September 25, 2022.