moebees wrote:I observed a video where tiny mating nucs in polystyrene hives wintered just fine outside (Ukraine; similar USDA zone).
Out of 4-5 all made it fine.
That is encouraging.
To clarify: the tiny nucs were configured the warm way on those teeny-tiny square frames;
there was a ventilation hole in a floor (otherwise, one round ~1/2 inch entrance);
they were under plastic film that created a hermetically sealed ceiling.
Polystyrene compatible to 2 inch/R10 US version.
They just set there on a bench, in a protected, sunny spot all winter long.
I think the fellow mated the queens late in season and took them into the winter as backups (and as an experiment; he sells queens for living and so early season queen availability from a local source is a big deal).