Cerinthe major is one of my favourite bee-friendly flowers in the garden at the moment.
If you are looking for plants to attract bees, then the Honeywort is a must-have flower for the garden. The sumptuous purple of Cerinthe Major makes it look so exotic and delicate, but it really is as tough as old boots. You can buy these plants in the garden centre where they will cost you a small fortune, but they are really easy to raise from seed. They happily reproduce themselves in the garden and the self-sown plants are much stronger than the ones sown in pots and mollycoddled.