When should you move colonies into the overwintering room?
It is important to get them in before there is too much snow, but if the average temperature is below 5 degrees C, then that’s a good time. Note that this is specific for Southwestern Ontario.
When should you take indoor overwintered colonies outside in the spring?
Colonies can be moved out in late March or early April depending on the forecasts. I like to see an average temperature of higher than 5C before moving them out. Note that this is Southwestern Ontario specific and may differ depending on your local climate.
Do you leave screen bottom boards on in the winter?
Yes, but we have a normal bottom board under them, and we close off the back and reduce the front entrance to prevent drafts.