Whitehall Biological Control Project 

Learn About Whitehall Bio Control: 8/9/2023


August 9, 2023


The robust "C" shaped larvae of the spotted knapweed root boring weevil and the feeding damage they do to the inside of the knapweed root.

We are finished with leafy spurge insects and most of the crew will be finished working this week for the summer as they start school and sports. We have now collected about 60 releases of spotted knapweed root boring weevils Cyphocleonus Achates and have requests for 100+. Hopefully, we can meet these requests. These neat beetles (weevils are long-nosed beetles) are collected one at a time by hand, 100 per release. The insects are only up and out of the soil in collectible numbers when the afternoon temperatures are in the high eighties or above. They are also very camouflaged and drop off...

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