I've done a good bit of reading about QE's and I'm curious as to why you should remover them after the nectar flow (before wintering).
On my hives I overwintered I leftr a full Medium of capped honey on for winter stores. It looked great in February. I planned on harvesting since I use no chemicals and the honey hadn't granulated. Well, when I went middle of April the Queen in both hives had decided to lay in the supers. Well over 1/2 of each super on each hive was full of capped brood (mostly drone).
Did I do something wrong? When is the correct time to add excluder's so this doesn't happen again?
If this were to happen again, what to do with frames seeing they are Mediums and my brood boxes are deeps.