Bull Thistle (Spear Thistle)

Authors

L.-T. Kok, Virginia Polytechnic Institute and State University
A. Gassmann, CABI Bioscience Centre Switzerland

Date of this Version

2002

Comments

In: Van Driesche, R., et al., 2002, Biological Control of Invasive Plants in the Eastern United States, USDA Forest Service Publication FHTET-2002-04, 413 p.

Abstract

Bull thistle, Cirsium vulgare (Savi) Tenore, is an invasive thistle from Eurasia, found throughout the United States and in Canada from Newfoundland to British Columbia. It is capable of invading fields, pastures, wastelands and along roadsides, but will not survive in cultivated fields.