>> Additionally, it seems that if the soil reaches a cold enough state over winter,
>> that there is no survival to provide an initial infestation the next spring.
>
>Your initial infestation in the spring is from SHB adults that
>overwinter in the bee cluster.
Good point.
What I don't understand, I guess, is that beekeepers who winter in cold regions
seem to be reporting that without repeated introductions, infestations of SHB
either are no problem, or disappear altogether.
Can anyone explain that?
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