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Diatomaceous Earth for June Bugs

Writer: Andy HemmerAndy Hemmer

June Bug

June bugs, often an unwelcome summer visitor, can wreak havoc on gardens and lawns. Using natural, chemical-free solutions such as diatomaceous earth can help control these pests without harming the environment. This article explains what diatomaceous earth is, explores the biology and habits of June bugs, and provides practical advice on how to use this natural remedy effectively.



 


What is Diatomaceous Earth?

diatomaceous earth

Diatomaceous earth (DE) is a naturally occurring sedimentary rock composed of fossilized remains of diatoms, microscopic algae with silica-based shells. It appears as a fine white powder and is highly absorbent. Due to its abrasive qualities, DE is commonly used as a natural insecticide. It works by damaging the exoskeleton of insects, causing dehydration and eventual death (National Pesticide Information Center, 2021).



 


Understanding June Bugs

june bug on leaf

June bugs, scientifically known as Phyllophaga spp., are a type of beetle that emerges in late spring and early summer, hence their name. These insects are nocturnal and are typically brown or black with shiny, hard shells. Adult June bugs are drawn to light, warmth, and nutrient-rich foliage, while their larvae, commonly called grubs, feed underground on plant roots (University of Minnesota Extension, 2020).



 


What Attracts June Bugs?

porch light at night

June bugs are primarily attracted to:


  • Bright lights like your backyard or front porch light, especially at night.


  • Moist and healthy lawns, particularly those well-fertilized or rich in organic matter.


  • Leafy plants, fruits, vegetables, and flowers in gardens.



 


Bugs and Predators Attracted to June Bugs

parasitic wasp on flower bloom

The presence of June bugs can attract additional pests and predators, including:




 


Damage Caused by June Bugs


June bugs and their larvae can cause significant harm:




 


How to Apply Diatomaceous Earth to Control June Bugs


Effectively using diatomaceous earth involves several key steps:


  1. Use an Approved DE: Ensure you choose diatomaceous earth that is rated for crawling insects, which is safe for pets and humans. Pool or filter grade diatomaceous earth is toxic for humans and animals.


  2. Identify Problem Areas: Target application to areas showing signs of infestation, particularly around plants and lawns showing damage.


  3. Apply Dry DE: Sprinkle the powder lightly around plants, garden beds, and directly onto the lawn, focusing especially near the bases of plants.


  4. Reapply After Rain: Since DE loses effectiveness when wet, reapplication after rain or heavy dew is necessary.


  5. Use Protective Gear: Although safe, DE can irritate lungs and eyes, so wear a mask and gloves during application (Penn State University Extension, 2017).



 


Alternative Chemical-Free Solutions


Aside from DE, other effective natural methods to repel or control June bugs include:





 


Conclusion


Diatomaceous earth provides a highly effective, environmentally friendly solution for managing June bug infestations. Combining DE with other chemical-free methods ensures your garden and lawn remain healthy and vibrant throughout the summer months. By understanding June bugs and proactively managing their populations, you can sustainably protect your outdoor spaces.




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