At this time of year the bees are just beginning to emerge more regularly and very soon they will find much of their food from trees and shrubs. Most perennials and particularly most of the daisy family tend to flower later. Doronicum is a significant exception flowering as soon as the temperatures begin to head above 10 degrees. My plants are just showing buds now. Honeybees love all types of daisy-shaped flowers as they are very open and accessible. They also tend to flower for weeks opening up new nectaries on a daily basis until the centre of the flower has a fuzzy appearance.
Dornonicums are meant to like damp conditions but I have found they also cope well in quite light soils.
They clump up relaibly but are not invasive; all in all a very well behaved but tough garden plant.