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Writer's pictureAndy Hemmer

How To Spread Diatomaceous Earth on a Lawn

Updated: 1 day ago


fresh cut lawn

If you're looking for an effective, natural way to control pests on your lawn, diatomaceous earth (DE) might be the perfect solution. DE is made from the fossilized remains of tiny aquatic organisms called diatoms. It's a fine, powdery substance that can be highly effective in controlling a wide variety of pests, including ants, fleas, ticks, and more. This guide will walk you through the steps to properly apply diatomaceous earth on your lawn, ensuring you get the best results while keeping your lawn healthy and pest-free.



What is Diatomaceous Earth?

pile of diatomaceous earth

Food grade diatomaceous earth is a naturally occurring, soft sedimentary rock that is easily crumbled into a fine white or off-white powder. It is composed of the fossilized remains of diatoms, a type of hard-shelled algae. DE works as a pest control method by absorbing the fats and oils from the exoskeletons of insects, causing them to dehydrate and die. It is non-toxic to humans and pets, making it a popular choice for organic gardening and pest control.



Benefits of Using Diatomaceous Earth


  • Natural and Non-Toxic: DE is safe for humans, pets, and the environment, making it an excellent alternative to chemical pesticides.


  • Effective Pest Control: DE can control a wide variety of pests, including ants, fleas, ticks, and more.


  • Soil Amendment: DE contains silica, which can improve soil health and plant growth.


  • Cost-Effective: A little DE goes a long way, making it a cost-effective pest control solution.



Tools & Materials Needed


  • Diatomaceous earth





  • Lawn spreader or dust applicator (flour sifter)





  • Protective gear (gloves, face mask, and goggles)


  • Watering can or hose



Step-by-Step Guide to Spreading Diatomaceous Earth on Your Lawn


1. Choose the Right Time


The best time to apply diatomaceous earth is when the lawn is dry and there is no rain in the forecast for at least 24-48 hours. This ensures that the DE will remain effective for a longer period, as moisture can reduce its effectiveness.


2. Prepare Your Lawn


Before applying DE, mow your lawn to a shorter length. This will help the DE reach the soil and the pests more effectively. Remove any debris, leaves, or grass clippings from the lawn to ensure an even application.


3. Wear Protective Gear


While DE is non-toxic, it is a fine powder that can irritate your eyes, skin, and respiratory system. Wear gloves, a mask, and goggles to protect yourself during the application process.


4. Use a Lawn Spreader or Dust Applicator


For larger areas, using a lawn spreader is the most efficient way to apply DE. Fill the spreader with diatomaceous earth and adjust the settings for a fine, even distribution. For smaller areas or spot treatments, a dust applicator or even a sieve can be used.


5. Apply Diatomaceous Earth


  • Spreader Method: Walk at a steady pace across your lawn, ensuring even coverage. Overlap each pass slightly to avoid missed spots.


  • Dust Applicator Method: If using a dust applicator, gently squeeze or shake the applicator while walking across the lawn. Aim for a thin, even layer of DE.


  • Wet Application Method: Use 1 cup of diatomaceous earth to 1 gallon of water for the ratio and spray onto your lawn. You can apply to large amounts of space with this method. Let the water evaporate and you will be left with a white film on all vegetation.


6. Water the Lawn Lightly (Optional)


Some gardeners prefer to water the lawn lightly before applying DE to help it adhere to the grass and soil. However, this is optional and may reduce the effectiveness of DE if too much water is used.


7. Reapply as Needed


Diatomaceous earth is most effective when dry, so you may need to reapply after heavy rain or watering. Regular applications every few weeks can help maintain pest control throughout the growing season.



Safety Tips


  • Always use diatomaceous earth for pest control, as other forms of DE, like filter grade, can contain harmful additives.


  • Store DE in a dry, cool place to maintain its effectiveness.


  • Keep DE out of reach of children and pets to avoid accidental inhalation.



Conclusion

family enjoying their lawn

Using diatomaceous earth on your lawn is a natural, effective way to control pests and improve soil health. By following these steps, you can ensure that your lawn remains healthy and pest-free without the use of harmful chemicals. Remember to reapply DE as needed and take appropriate safety precautions to protect yourself and your family. With a little effort, you can enjoy a beautiful, thriving lawn all season long.






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