Bees don't like to search for flowers, so plant in mass so they can hop from plant to plant. Good luck!
Good point, Les. The more I know about bees, the more impressed I am with their sense of smell. A patch of nectar plants is much easier to find that a single plant, visually and through the sense of smell.
I was reading
American Honey Plants by Frank Pellett. Pellett emphasizes that even a timely minor nectar plant, in large quantities, will contribute to a surplus honey flow. In early spring, prior to a major nectar flow, a minor nectar plant bloom in large quantities can stimulate brood rearing enough to build the colony up for the major flow. Pellett praises the lowly Dandelion as a contributor to spring build up.
American Honey Plants is available at numerous sites for free download. This is an easy to read version that a bee club has made available.
http://site.alamedabees.org/2012/09/11/american-honey-plants/ Scroll down to find the link.
Several of Pellett's books are available for free download. They are easy to find doing a search of the internet.