First of all, you can't 'attract' bees. Once they're in your yard, there are things you can do to keep them there. |
Some of the bees have long beaks, and some of them have short beaks. Some flowers are deep; some are shallow. |
What's really good is (a pile of) grass cuttings or a decomposing log, a dead tree. Make sure it's in a sunny place and on the ground. |