Honey bees are drawn to the Buckeye , which is just finishing its bloom, and yet, the pollen is toxic to the bee. The bees take the pollen back to the hive and feed it to the developing bees. The result is wingless bees: if too many are wingless, they cannot forage, and the hive starves.
Hopefully there is enough else blooming to distract the bee or provide enough of other types of pollen.
Perhaps it is the danger of a non-native foraging in a foreign territory—for honey bees are non-natives to the Americas.
Take a Biodynamic tour at our Open House, June 23, 2012. For details, see Harms Vineyards and Lavender Fields Open House.