We always hear about bees being happy in clover, but I think they seem down right ecstatic gathering nectar or pollen from the many blooms of Hypericum frondosum "Sunburst".
About 18 months after I added it to the garden, Hypericum has done really well for me here in Tennessee so far. It's planted on a steep hillside and has endured the cold, hear, drought and rains beautifully. Not too surprising, as it is (according to Missouri Botanical Garden) native to rocky hills and barrens from Kentucky to Texas.
Do you grow any of the Hypericums? If so, what has been your experience with them?