Depends where you are and what you want from your bees.  Here, it's
-10F.  I'm stationary.  I don't do anything to disrupt the ability of the
cluster to stay together or move around.  Right now hives are broodless and
I want them to stay that way until the maple buds begin to swell and color
up in February.  Our bees will cluster/break cluster on a weekly basis
through May.  When I do put pollen sub on, it's at the edge of the brood
nest, usually between the two brood chambers in the rear third.
Cheers,
Kristina Williams
Boulder, CO, USA

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