Learn About Whitehall Bio Control: 6/28/2023
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June 28, 2023
Photo courtesy TODD BREITENFELDT
A yellow starthistle flower with toxic spines. Thus far, this plant has been successfully kept out of Montana.
Because of the continued cool, wet weather, we are continuing to collect the Dalmatian toadflax stem boring weevil Mencius janthiniformis. We have requests for over 70 releases and have only been able to collect 10 releases so far. We will be trying to collect more this week as the weather warms. Wish us luck! It is very heartening to see how much damage these skinny little black weevils are doing to Dalmatian toadflax along the I-90 corridor in the Missoula area and along the 1-15 corridor between Helena and Boulder.
We were able to collect four releases of the yellow toadflax stem mining...
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