Bee Welfare: Pesticide Impacts and Colony Health

Pesticide exposure is one of the most significant threats to both honey bee and wild bee welfare, affecting navigation, memory, reproduction, and immune function.

Key Facts

Neonicotinoid pesticides impair honey bee navigation, memory, and reproductive success at sublethal doses
The EU banned outdoor use of three major neonicotinoids in 2018 following evidence of harm
Pesticide synergistic effects — multiple chemicals acting together — are poorly understood and potentially severe
Fungicides, though considered low-risk, impair bees' ability to detoxify other pesticides
Over 40% of wild bee species are at risk of extinction in Europe and North America

Welfare Considerations

The welfare of bees — including their capacity to navigate, communicate, reproduce, and avoid harm — is profoundly affected by pesticide exposure at levels present in agricultural landscapes. Sublethal neonicotinoid exposure does not kill bees outright but compromises their ability to function: disoriented foragers cannot return to their hives, queens produce fewer eggs, and larvae develop abnormally. This represents chronic, population-level welfare harm. Reducing pesticide use through integrated pest management and supporting organic agriculture are the most effective individual and policy responses.

What You Can Do

Avoid using neonicotinoid-containing pesticides in your garden
Choose organic produce to support farming systems that prohibit neonicotinoid use
Plant pesticide-free wildflower areas for native bee habitat
Advocate for stronger regulatory restrictions on bee-harmful pesticides
Support bee welfare and conservation research organizations