Fast growing hive - help
I planted a three foot magnolia about a month ago. I looked at it today and over half the tree is covered with small bees amd it looks like like a massive hive. I really didn't want to get to close, so I'm not real sure what is going on. I am about to have 30-40 people at the house, and I'm really concerned about stings. I swear it wasn't there last week when I checked the tree out.
What kind of bees form a hive like that? Is this dangerous? It looks like it has taken over half the tree. I can send a photo if visual aids are needed. I can't call the extension office till Tuesday, what to do in the meantime?