Fact Sheet No. 302, UMaine Extension No. 2421 Fact sheet prepared by C. S. Stubbs, F. A. Drummond, and D. E. Yarborough, University of Maine, Orono, ME 04469. January 2000.  Revised April 2002. Introduction Maine blueberry growers have three commercially available pollinators: honey bees1, alfalfa leafcutting bees2 and bumble bees. Research conducted at the University