I purchased bees last summer and they were doing really well. I checked on them during the winter and while I did see some dead bees on the ground the hive seemed to be OK. But when I checked on them again the end of Feb, they were all dead. Did they freeze? Should I have covered the hive? There was still plenty of honey in the hive. I have ordered more bees and will try again, but I don't want these bees to die too.
Baltimore County Maryland beneficial insects and pollinators
It can be difficult to tell how a hive died, but usually it is due to starvation, humidity within the hive (condensation builds up on bees and freezes), or an infestation of varroa mites. This blog on our website is a great resource: https://beeinformed.org/2016/03/08/why-did-my-honey-bees-die/ This will help you narrow down the cause and also gives solutions on how to keep your bees from dying next year.