Dot Blaha learned that mason bees need a tube suitable for the bee to place bee bread and eggs in the tube during the season. The eggs hatch, eat the nectar and pollen and then exit the tube show on this end of the bee house. Then the young mason bees pollinate lots of flowers as they collect nectar for food. Have you tried housing bees for increased pollination? See Dot’s story at: http://www.yankton.net/river_city/article_7ca120da-ceed-11e2-a378-001a4bcf887a.html
Plant Exchange Blog 