Does diatomaceous earth harm beneficial insects?

Answered by Jarrod Smith

Diatomaceous earth (DE) can indeed harm beneficial insects if they come into contact with it. While DE is effective at killing pests like ants, fleas, and bed bugs, it acts by dehydrating and damaging the exoskeleton of insects. This means that any insect that comes into direct contact with DE, whether it is a pest or a beneficial insect, can be affected.

Beneficial insects like ladybugs, green lacewings, butterflies, and bees play a crucial role in maintaining the balance of ecosystems and aiding in pollination. They are often considered the “good guys” because they help control pest populations and promote plant growth. However, if they come into contact with DE, they may also suffer the same dehydrating effects as the pests.

To minimize the potential harm to beneficial insects, it is important to use DE with discretion, especially around plants that these insects frequently visit. It is recommended to avoid using DE around flowers and other areas where beneficial insects may be present. By doing so, you can help protect these valuable creatures and maintain the ecological balance in your garden or environment.

In my personal experience, I have used DE in my garden to control pests like slugs and snails. However, I always make sure to avoid applying it directly on flowers and areas where I know beneficial insects like bees and butterflies are active. I have noticed that by using DE strategically and sparingly, I can still protect my plants from pests without causing harm to the beneficial insects that are essential for the health of my garden.

While DE is effective at killing pests, it can also harm beneficial insects if they come into contact with it. To minimize the potential harm, it is important to use DE with discretion and avoid applying it around flowers and areas frequented by beneficial insects. By being mindful of the potential impact on these “good guys,” we can strike a balance between pest control and supporting a healthy ecosystem.