When to harvest cocoons
Mason bees overwinter as adult bees and should be harvested between October-December.
Read how to harvest mason bee cocoons here.
If you forgot to harvest in the fall, see how to shift bees from old nesting-holes to new here.
Leafcutter bees overwinter as larva and should be harvested in spring, typically around April or May.
As long as the leafcutter cocoons have been kept below 60F/15C, the larva stay in hibernation and can be coaxed into developing to adult bees through warming them up.
Read how to harvest leafcutter bees here.
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