Pastinaca sativa L.
Coefficient of Conservatism: *
Coefficient of Wetness: 5
Wetness Index: UPL
Physiognomy: Ad B-Forb

A Eurasian native, very well established (though usually ignored by collectors) throughout Michigan. Moist to dry roadsides, fields, clearings, shores; invading open forests and thickets. First collected in 1871 in Wayne Co., but found in the 1880’s in counties as far apart as Keweenaw, Emmet, and Ingham. Though no collections are known, the species was listed by the First Survey, so presumably it was in the state as early as 1838.

The common weed has presumably (in part, at least) reverted to the wild from cultivation, where strains are grown for their fleshy whitish edible roots. “Wild” plants have the same parsnip odor; the root is not poisonous to eat, despite a dubious reputation, but the foliage may be a serious skin irritant in sensitive people. The stems in this species are deeply furrowed and strongly angled. Very depauperate specimens may have leaves with only 3 leaflets.


Alcona County
Alger County
Alpena County
Baraga County
Benzie County
Berrien County
Charlevoix County
    Including Beaver Island
Cheboygan County
Chippewa County
    Including Drummond Island
Delta County
Emmet County
Gladwin County
Grand Traverse County
Gratiot County
Hillsdale County
Houghton County
Ingham County
Isabella County
Jackson County
Kalamazoo County
Kalkaska County
Kent County
Keweenaw County
    Including Isle Royale
Lake County
Leelanau County
    Including Fox Islands
Lenawee County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Macomb County
Marquette County
Mason County
Mecosta County
Midland County
Monroe County
Muskegon County
Newaygo County
Oakland County
Oceana County
Ontonagon County
Ottawa County
Presque Isle County
Schoolcraft 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. December 3, 2022.