Usually it should be possible to get bees, by grwoing a tree in a forest. 

I am playing Skyblock on a spigot server and we grew some trees in a forest Biom to get a nest with bees. We got the nests, but without the bees. They're not inside of the hive either, as I found out by running the command:

/data get block 390 107 535 

Those are the results, that I got: