When do bees swarm. Do they swarm whenthe swarm cells are capped. Do they swarm when the new queen is about to emerge. I know there will be many different answers but just curious to everyones opinion. I've got one hive I'm going to look at this morning that I discovered swarm cells in late last night. Time to cut out Queen cells and make nucs with them. Going to try and find the old queen and put her in a nuc. I'll post later on my findings. P.S. the cells I found in this hive were all capped. Hope I'm not to late!!!!