Diatomaceous earth is a non-toxic way to control pests in the garden. It is effective against all insect pests that crawl on plants because contact with the powder is extremely dehydrating. After watering the plants, dust them with an applicator.Click to see full answer. Furthermore, is diatomaceous earth harmful to plants?Diatomaceous earth is often used in organic gardening because it is not toxic and is safe to use around children and pets. Its safety for use on plants and the lack of harm it causes to roots as well as other parts of the plant is another reason organic gardeners prize the substance so much.Additionally, how do I apply diatomaceous earth to my garden? Sprinkle the powder anywhere on the soil where insects will encounter it, such as entrances to garden beds or the sides of paths. Sprinkle the powder onto the leaves and stems of plants plagued by insects. Apply a puff of diatomaceous directly on bugs as you see them. Accordingly, is diatomaceous earth good for soil? Thanks to the Association of American Plant Food Control Officials (AAPFCO) there’s now another reason to consider natural diatomaceous earth as a soil conditioner. The silica content of diatomaceous earth is absorbed into plant tissue and helps improve plant structure and resistance to pests and disease.Can I use pool diatomaceous earth on my garden? Pool Grade DE Pool grade Diatomaceous Earth is treated with especially high heat. This type of treatment is known as the process of calcination. Because the heating process alters the Diatomaceous Earth significantly, it is not effective for use in the home, yard, or garden.