Honey Bee Pests and Diseases

This section provides information regarding the disease and pests that may afflict honey bee colonies in Ontario. Information provided includes the biology of the pest, how to monitor for them and the available registered treatments.

Please refer to the 2010 Ontario Recommendations for Honey Bee Disease Control (currently being revised and will be made available again soon) for current guidance regarding disease management.

Please Note:

No other treatments (chemical compounds) other than those listed are approved for use in bee hives in Ontario.

Always follow label instructions for handling and applying any chemical in the bee hive. This is important not only for the beekeeper, but also for minimizing the possibility of creating resistance to the chemical.

Dispose of waste chemicals as directed on the label instructions. Never apply a treatment program while honey supers are on the colonies.

Follow withdrawal period recommendations on treatment labels.