Swarms are great for drawing comb, then I kill the queens and replace or unite with my own bees. I really do disagree with our association and members giving swarms to new keepers and those that find numerous swarm cells making up nucs to give away. All this does is increase the number of swarmy bees. I only make nucs up from colonies I have to force to make queen cells. But this year looking back at last years records I have been as much as 6 weeks later doing first inspections. My use of pollen subs has allowed the bees to grow very well despite the freezing wet spring but judging space has been very difficult, until the last 2 weeks I hadn't done an inspection above 12c and I personally do very much believe that space is a very important factor in swarm prevention. Last year I only had 2 colonies swarm, this year its tripled but no forage all spring then 2 weeks of flow they have filled every cell available with pollen or nectar and queens have been shut down for space and to make things worse I have restricted supers to make them cap the honey as every farmer is growing OSR this year and every colony is rammed with bees. LOL...Never 2 years the same. 11 years in and I still don't know what I am doing... 
