Can You Put Diatomaceous Earth on Tomato Plants

Diatomaceous earth (DE) is a natural powder made from the fossilized remains of tiny, aquatic organisms called diatoms. DE has a myriad of uses, from pest control to water filtration, and is especially popular in organic gardening. However, before sprinkling DE on your tomato plants, it's important to know a few things first.

What is Diatomaceous Earth?

Diatomaceous earth is composed of the finely ground, microscopic shells of diatoms. These shells are made of silica, a naturally occurring mineral that is abundant in the earth's crust. When the diatoms died, their shells settled on the ocean floor and eventually fossilized into a soft, chalky powder that we know as diatomaceous earth.

How Does Diatomaceous Earth Work?

Diatomaceous earth works by disrupting the waxy outer layer of insects and other pests, causing them to dehydrate and die. When a pest comes into contact with DE, the fine, sharp edges of the powder cut through the insect's exoskeleton, leading to water loss and ultimately, death.

Can You Use Diatomaceous Earth on Tomato Plants?

Yes, diatomaceous earth is safe to use on tomato plants and other garden vegetables - as long as you use food-grade DE. Food-grade diatomaceous earth is purer and contains less crystalline silica, which is harmful if inhaled. Always check that the DE you are using is safe for use in gardens and follow the instructions carefully.

Benefits of Using Diatomaceous Earth on Tomato Plants

One of the main benefits of using diatomaceous earth on tomato plants is that it is safe and natural. Unlike chemical pesticides, DE does not harm beneficial insects or wildlife, and it will not leave harmful residues on your crops. Additionally, DE is effective against a wide range of pests, including aphids, mites, and slugs.

How to Apply Diatomaceous Earth to Tomato Plants

To use diatomaceous earth on tomato plants, you can either dust the plants with the powder or mix it with water to create a spray. Dusting the plants involves sprinkling the powder directly on the leaves and stems, being careful to cover all surfaces thoroughly. To make a spray, mix 4 tablespoons of DE with 1 gallon of water and pour the mixture into a spray bottle. Spray the plant liberally, making sure to cover all surfaces.

Final Thoughts

In conclusion, diatomaceous earth can be used safely and effectively on tomato plants and other garden vegetables. However, it's important to use food-grade DE and follow the application instructions carefully. With its natural and non-toxic properties, diatomaceous earth is a great choice for organic gardeners looking for a safe and effective way to control pests.