I planted several hedges of butterfly bush at our place. Purple and golden ball.

While honey bees do visit the purple ones - they are all over the golden ball bushes. It can be like a crazy traffic jam of polinators at times. Long summer flowering. Good things about buddlia are - fast growing, evergreen(for privacy hedges) and best of all dont seem to require much additional water. In my area I can find them at just about any good nursury. Im pretty happy with them all in all.