Preparing the Hives for a Nordic Winter
By October, the foraging season is over. But the work is not. Here is how we wrap, ventilate and provision our hives for the five months ahead.
The most important work happens before the cold
At 59° north, our bees face roughly five months without forage. A colony does not so much survive a Nordic winter as it is prepared for one — and almost all of that preparation happens in September and October, while the weather is still mild enough to act. Get it right now, and the bees mostly look after themselves. Get it wrong, and there is very little you can do once the snow arrives.
Varroa first — everything else second
Nothing matters more than the autumn mite count. The bees that carry the colony through winter are raised in late summer, and if varroa damages them as larvae, no amount of insulation or feed will save the colony. We monitor mite drop and treat before the winter bees are reared, not after. Healthy winter bees are the whole game.
Feeding for the long dark
Once the supers are off, we judge each hive by the heft test — lifting the back to feel the weight of stores. Anything light gets fed:
- Thick syrup, fed early, while it is still warm enough for the bees to take it down and cure it properly.
- Enough to leave each colony heavy going into November — better a few kilos too much than one too few.
- A supplement where natural stores are thin, to keep the cluster well nourished through brood-less months.
Wrapping and, above all, ventilation
This is where new beekeepers often go wrong: the danger in a Nordic winter is not the cold — it is damp. Bees handle cold remarkably well; cold condensation dripping back onto the cluster kills them.
- Insulation on top of the cluster, to keep the warm dome dry.
- A small upper entrance or ventilation gap so moist air escapes.
- Mouse guards on the entrance before the first frosts.
- The hive tilted slightly forward so any water drains out rather than pooling inside.
Then we wait
By the first snow there is nothing left to do but resist the urge to interfere. We heft the hives on still days, clear snow from the entrances, and otherwise leave them be. The bees know how to do this; they have done it far longer than we have. Our job is simply to have set the stage well — and then to trust them through the dark.