Garden Fresh Salsa

Eliminating Fungus Gnats with Diatomaceous Earth

Fungus gnats aren’t much of a harm to us humans but they most definitely can be a nuisance with their buzzing noises. Fungus gnats typically appear from poor-quality soil that get damp for an extended period of time. Gardeners who over-water their plants are more likely to face issues with gnats. There are a number of ways that can help eliminate these pests, one of which is to use non-toxic diatomaceous earth.

Diatomaceous earth is a natural white powder that has started to build quite a good reputation for itself as far as natural pest control is concerned. It is one of the most effective ways to eliminate soft-bodied insects if you want to go about pest control in a natural way. Made from fossilized algae, the microscopic sharp edges of the diatomaceous earth powder can pierce the outer layer of the bug’s body. This reduces the insect’s ability to retain moisture so they eventually die from dehydration.

Fortunately, diatomaceous earth is a highly-effective solution for fungus gnats. When the soil of the infested plant is dry again, you are going to dust a fine layer of diatomaceous earth on the top layer of the soil. The powder becomes ineffective in damp conditions so you shouldn’t use it immediately after a container plant gets watered.

When you buy diatomaceous earth, please be sure to get the food-grade version. The pool-grade version is toxic due to the higher concentration of silica. The food-grade version, on the other hand, is safe as long as you don’t accidentally breathe in a large amount of it at once.

When using this method, you need to be a patient. You should give it at least a couple of days for the food-grade diatomaceous earth to work its magic on the fungus gnats.


Leave a Reply