Learn About Whitehall Bio Control: 7/19/2023

Our summer is quickly moving along. The toadflax insects are finished. All the adults have laid eggs, and most have died of old age. We are in the middle of collecting leafy spurge flea beetles (Aphthona spp.) and are doing well with numbers. Next week we hope to start collecting spotted knapweed root boring weevils for the many requests we are receiving.

We tried going to a former good flea beetle site in Missoula that we have collected from before however, it also is crashing so we only collected 6 releases. Then we found a site near Whitehall where because of irrigating, the spurge has c...