Some fungicides, such as captan, have direct contact toxicity to bees as they have some insecticidal activity in addition to their fungicidal effects. Other fungicides seem to harm bees in more subtle ways. ... Some fungicides can also have indirect effects on bee health.

Is Captan safe for bees?

Captan is a man-made fungicide used to control a range of fungal diseases on plants. ... Captan affects a fungus by interrupting a key process in its life cycle. If consumed, it is very low in toxicity but it can be harmful to eyes. It breaks down in soils relatively quickly and is practically non-toxic to birds and bees.

Does fungicide hurt bees?

Bees and other beneficial insects can be exposed to fungicides directly or through contaminated nectar and pollen in urban and agricultural settings. Fungicides can harm bees in a variety of ways, affecting bee development, behavior, immune health, and reproduction.