Centaurea diffusa - Asteraceae Family - Biennial or short lived perennial
Prevention (Prev) Monitor and destroy new plants before seed production.
Mechanical (Mech) Hand pulling, digging, cutting, mowing and tilling.
Cultural (Cult) Biological control agents, livestock grazing, and revegetation practices.
Chemical (Chem) Selective herbicides based on the plant and the specific location. Check our weed fact sheets for specific control information.
Cindy Roche, Bugwood.org
Old, XID Services, Inc., Bugwood.org
(2013, November). Diffuse and spotted
knapweed – 3.110. Retrieved from http://extension.colostate.edu/topic-areas/natural-resources/diffuse-and-spotted-knapweed-3-110/
J.M., G.B. Kyser et al. (2013). Weed
Control in Natural Areas in the Western United States [PDF file]. Weed
Research and Information Center, University of California. Retrieved from https://wric.ucdavis.edu/information/natural%20areas/wr_C/Centaurea_stoebe.pdf
Species Compendium. (2018, July 15). Centaurea
diffusa (diffuse knapweed). Retrieved from https://www.cabi.org/isc/datasheet/12039
(2018, April). Know your knapweeds. Retrieved
University. (2008, September). Knapweeds:
Centaurea spp., Acroptilon repens [PDF file]. Retrieved from https://catalog.extension.oregonstate.edu/sites/catalog/files/project/pdf/ec1596.pdf
& Randall, C. (2005, April). Biology
and biological control of knapweed [PDF file]. Retrieved from https://bugwoodcloud.org/resource/files/6223.pdf