I agree that cold is not the issue. We have had winters with at least 20+ days of -65 F and colder with friends in other areas having temps. dipping into -75 F to -80 F with great success on wintering.
Taking care of the wind is very do-able. It is moisture and our number one concern is starvation. With weigh the option of selling 60# of honey @ $10.00 per pound vs. buying new packages for $160.00+. Our wintered hives always exceed the new package crop production. We can't start new packages until close to May 1. We only really have a honey crop for three to four weeks in July; Fireweed. We have installed packages in hail, snow storms, and plain nasty weather the third week of April.
We drill a 5/8" hole in top box and plug with cork when not in use with 1/2 open entrance with screens for the shrews. We use 100% wood boxes. Candy boards have been the greatest improvement and I believe the greatest factor in our survival rate along with adequate stores. It is not uncommon to have 4.5% winter loss - with the occasional clinker claiming higher loss.
The Alaska Bush is unforgiving. There is no hardware store down the road - no roads period to anywhere. Planning and improvising and sticking to details is required. No exceptions or we are out of business.
Joe CarsonAlaska Heavenly Honey
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