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Possibly wasp coming with an order of mason bees from Utah #866808
Asked May 02, 2024, 4:27 PM EDT
Multnomah County Oregon
Expert Response
OSU Extension publication, "Nurturing Mason Bees in your Backyard in Western Oregon", is a great resource for starting with mason bees. I would follow steps for cleaning the cocoons and eliminating any wasps or pollen mites which you find.
Enjoy this new adventure.