Will Diatomaceous Earth Kill Potted Plants?

Diatomaceous earth (DE) is a white powdery substance made from the remains of aquatic organisms known as diatoms. It is commonly used as an insecticide to control pests on plants and around the home. However, many gardeners wonder if diatomaceous earth can harm potted plants. Let's take a closer look at how diatomaceous earth works and whether it is safe to use in potted plant containers.

How Does Diatomaceous Earth Work?

Diatomaceous earth works by the process of desiccation or drying out. The microscopic particles in the powder are sharp and abrasive, which cuts into the exoskeleton of insects when they come into contact with it. This causes the insect to lose moisture and becomes dehydrated. Diatomaceous earth has been shown to be effective against a variety of pests such as ants, cockroaches, bed bugs, and fleas.

Is Diatomaceous Earth Safe for Potted Plants?

The good news is that diatomaceous earth is safe for potted plants. It is a natural product that does not contain any harmful chemicals or synthetic pesticides. In fact, many gardeners use diatomaceous earth as a plant fertilizer since it contains minerals such as calcium, magnesium, and silica.

When using diatomaceous earth in potted plants, it is important to use food-grade diatomaceous earth, which is safe for consumption by humans and animals. This type of diatomaceous earth has been processed to remove any impurities and is labeled for use as a pesticide.

How to Apply Diatomaceous Earth to Potted Plants

The best way to apply diatomaceous earth to potted plants is to sprinkle a thin layer on the soil surface around the plants or on the leaves. Be sure to wear gloves and a dust mask to avoid inhalation of the powder, which can be irritating to the lungs.

Diatomaceous earth should be reapplied after every watering or rain since it loses its effectiveness when wet. If using diatomaceous earth for pest control, it may take several applications to see results since it works by drying out the insects over time.

Conclusion

In summary, diatomaceous earth is a safe and effective natural pesticide that can be used in potted plants. It works by drying out insects and does not contain any harmful chemicals or synthetic pesticides. When using diatomaceous earth, it is important to use food-grade diatomaceous earth, wear gloves and a dust mask during application, and reapply after every watering or rain. Happy gardening!