Favorite Plants For Bees?

I rent, so I got a limited space to work with. That said, I counted 12 bees buzzing my 3 anise hyssop plants (Two are 2 years old in the ground, 1 in a container from seed this year) and my (Monarda Citriodora) lemon bee balm! This is the most I have seen in my yard so far!

Walking conservation areas around here I've noticed they show extreme preference toward common milkweed and butterfly weed, and somewhat to nearby mountain mint. I have seen a few buzzing my salvia as well.

What other native species have you seen bees go crazy for?