You can have all the carpenter bees that love to bore into our treated wood on our deck every year! Won't get them until the summer though. I'd dispatch them before I would mail them though. I wouldn't kill bumble bees though. They don't destroy wood like carpenter bees do.

Bumble bees are harmless, I would leave them until the babies are hatched, they don't have large colonies, perhaps 20 or so......enjoy them! Konrad

I don't think that is going to work for you. In the growing season in Texas, you will likely have the greenhouse opened up for heat control. Native pollinators and honey bees will make their way in and out if it is sufficiently open. In the winter, bees will not successfully work inside a greenhouse.

They are BumbleBees. Every year at citrus blooming time, these guys are everywhere in my yard, along with other bees of course. But, these BumbleBees are solitary and seem to be migratory. They leave once the citrus blooms are gone. I began to notice in the evening that I would find them sleeping in side a large flower cup (ie: sky vine bloom or petunia) and then also found them inside some of my yard art (ie: the windchime). It gave me a new appreciation to the term 'busy as a bee'. They begin to 'turn in' for the night just before dusk and of course are up just after dawn to go back to work. I have no clue as to what they do with the pollen collection if they do not have a hive? Maybe someone more knowledgeable about bees can enlighten me.