Spotted Knapweed - Ask Extension
I have recently fenced in some land for horse pastures and have seen spotted knapweed taking over the land. Is there anywhere to buy knapweed root wee...
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Spotted Knapweed #877439
Asked July 16, 2024, 10:20 AM EDT
I have recently fenced in some land for horse pastures and have seen spotted knapweed taking over the land. Is there anywhere to buy knapweed root weevils as a biocontrol?
Mason County Michigan
Expert Response
I am not aware of any sources of biological control for knapweed.
I recommend soil sampling and managing the pasture for fertility and a good diverse mix that will outcompete the knapweed. Here is an article for dairy pastures that would apply to horses as well: https://www.canr.msu.edu/news/spotted_knapweed_in_dairy_pastures_and_hay_fields
Good luck!
