I have a question regarding "ventilation" and closing the hive for winter...
I have two hives, each consisting of two deeps.
In the upper deep, I have a ventilation hole, that I have left uncovered so far this winter. It is approximately 1and 1/4 " in diameter. i have black tarpaper surrounding the hive, and have insulated on top of the inner cover with fibreglass insulation (there is no ventilation hole in the inner cover...)
Is this what I should be doing? we have had one cold spell (-20 celsius) this winter, for two nights. I plugged the holes with 'wine cork' for those few nights, as I thought it would be too cold to leave them open. I have since removed the corks.
I live about 30 miles Northwest of Toronto, Ontario, Canada...FYI
All feedback is much appreciated...