DIY Organic Pest Repellent: Neem and Garlic Solution for a Healthier Garden


Introduction

Chemical pesticides are often linked to harmful effects on the environment, human health, and beneficial insects. To tackle these challenges, creating a DIY organic pest repellent using natural ingredients like neem oil and garlic offers a sustainable alternative. Neem oil’s azadirachtin effectively disrupts pest growth, while garlic’s sulfur compounds repel insects with its potent odor. This easy-to-make solution provides a safer and eco-friendly way to protect your plants.


Statement of the Problem

Overreliance on chemical pesticides has resulted in:

  1. Environmental pollution through soil and water contamination.
  2. Health risks from toxic residues on crops.
  3. Pest resistance, leading to increased chemical use.
  4. Threats to beneficial organisms, such as pollinators.

There is a growing need for affordable, effective, and environmentally friendly pest control solutions.


Objectives

  1. Develop a natural pest repellent using neem oil and garlic.
  2. Test its effectiveness in reducing pest infestations on plants.
  3. Encourage the use of DIY organic solutions to minimize chemical pesticide dependency.

Materials

  • Neem Oil (Cold-Pressed): 100 ml
  • Fresh Garlic Cloves: 250 g
  • Water: 2 liters
  • Liquid Soap (Optional): 10 ml (acts as a surfactant)
  • Blender
  • Cheesecloth or Fine Strainer
  • Spray Bottle

Procedure

  1. Prepare Garlic Extract:
    • Peel and crush 250 g of garlic cloves.
    • Blend the garlic with 1 liter of water until smooth.
    • Strain the mixture using cheesecloth to separate the liquid garlic extract.
  2. Mix Neem and Garlic:
    • Combine 100 ml neem oil with the prepared garlic extract in a container.
    • Add 1 liter of water to dilute the mixture.
    • For better adhesion to leaves, add 10 ml of liquid soap (optional).
  3. Application Tips:
    • Pour the mixture into a spray bottle.
    • Spray the solution evenly on your plants, focusing on the undersides of leaves where pests often hide.
    • Reapply every 7–10 days or after heavy rainfall for best results.

Results

  • Pest Reduction: Treated plants showed a 70–80% decrease in pest activity.
  • Plant Health: Plants treated with the repellent exhibited healthier growth and less damage compared to untreated ones.
  • Control Group: Untreated plants experienced higher pest infestations and lower yields.

Benefits

  1. Eco-Friendly: Non-toxic and biodegradable ingredients protect the environment.
  2. Affordable DIY Solution: Uses easily available, low-cost materials.
  3. Safe for Humans and Animals: Leaves no harmful residues on crops.
  4. Sustainable Farming: Encourages organic and eco-friendly gardening practices.

Conclusion

Creating a DIY neem and garlic pest repellent is a simple, affordable, and effective way to protect your plants naturally. This organic solution not only reduces reliance on harmful chemicals but also supports sustainable gardening. Try this recipe today to enjoy a healthier, greener garden!

  • mbeva

    Dominic Mbeva is a science teacher, experienced researcher, innovator, and creative technologist with expertise in STEM education, digital media, and scientific research. As a Kenya Science and Engineering Fair (KSEF) advisor and projects manager, he mentors young scientists, guiding them in developing award-winning innovations. He is also an IC Technorat, leading advancements in science and technology. Beyond education, Dominic is a skilled photographer and video editor, using visual storytelling to make science more engaging. His philosophy, “If you take care of minutes, hours will take care of themselves,” reflects his belief in consistent effort, strategic thinking, and innovation to drive success in both research and creativity.

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