Skip to main content
U.S. flag

An official website of the United States government

Invasives Williston

Detailed Description

A stand of field sow thistle (yellow flowers; Sonchus arvensis), Canada thistle (purple flowers; Cirsium arvense), and Kentucky bluegrass (grass; Poa pratensis), all of which are non-native and growing near an oil well pad in Mountrail County, ND.

Sources/Usage

Public Domain.

Was this page helpful?