With the goal of enhancing pollination efforts, several mason bee houses have been placed throughout the Arboretum.  What are mason bees?  Well, according to the provider of the pollinators, Dave Richards of JohnnyAppleBeez, LLC: “The charming Mason Bee is a gentle, shiny blue-black metallic bee, and slightly smaller than a honey bee. They are a superior pollinator, but do not produce honey.