I have swarm 3 hives that are still on their first deep. And 3 hives on their 2nd brood box. I'm feeding now but am worried about them making it through winter. When is it too late to "not" combine them w/ the 3 stronger hives?
When and if I combine how do I place the brood frames frrom both hives or just place on top of each other? Just wondering if folks mix and match frames on a combine?