5. How to Raise Summer Leafcutter Bees

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5.5 Fall & Winter: Remove & Protect

5.5 Fall & Winter: Remove & Protect

When the weather cools in the early fall, temperatures of 60F/15C and below are too cold for leafcutter bees to fly.

Leafcutter bees hibernate as delicate larvae inside of their leafy cocoons over the fall and winter. Remove your nesting materials from the bee house to protect the hibernating bee larvae from parasitic wasps, ants, earwigs, birds, and other predators.

Gnat-sized parasitic wasps lay their eggs inside of developing bee larvae and they are one of the most common pests for hole-nesting bees. The parasitic wasps that attack leafcutter bees are called pteromalus.

Remove and store the nesting holes over the fall and winter with leaf capped end facing up and protect with a fine-mesh BeeGuard Bag. You want to mimic nature’s temperatures and storage should always be in an unheated and unconditioned shed or garage.

  • Leafcutter bee activity usually ends in late summer or early fall
  • Store nesting holes with the capped or open end facing up
  • Winter storage: store intact nesting materials in your garage or shed

Pro Tip: To extend the life of your bee house, uninstall and store in your shed or garage over the fall and winter.


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How to Raise Leafcutter Bees
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