How to make Neem Insecticide from Neem Leaves

Neem (called Dogoyaro in Nigeria) is one wonderful Gift from Nature whose use transcends several fields like: medicine & healthcare, culinary, agriculture, beauty & cosmetics, etc.

The Neem Tree stays evergreen all year round. It is endemic to the Indian subcontinent, predominant in tropical and semi-tropical regions of the world.

It’s a unique green treasure as every part of the tree is useful. One of its uses is as a natural insecticide/pesticide. Scientific research indicates that Neem extracts can influence nearly 300 species of insects. Thus, it has great relevance in organic farming practices.

Azadirachtin is the most active component found in Neem. It acts as a repellant, interferes
with insect hormone systems, making it harder for insects to grow/lay eggs; and disrupts feeding. Therefore, Neem Seed Oil can kill insects at varying stages and can be used as a dormant-season application to kill pests and eggs. It is effective against nematodes by preventing the larvae from hatching. It works on arthropod pests that often eat vegetables, including tomato hornworms, corn earthworm, aphids and whiteflies

The recipe for the application of Neem seed oil as an insecticide varies. We have found Neem Seed Oil to be a more effective/potent pesticide when combined with Neem Tea (fermented neem leaves).

The Making of Neem Tea

Strip Neem leaves from the branches and macerate using a food processor, by pounding, cutting/ chopping. Place the Neem leaves in a container and cover with water – use three-parts macerated neem leaves to one-part water or sieve to separate the neem leaves and filter the Neem Tea (caution – IT SMELLS REALLY AWFUL!).

The decanted neem leaves can be used for compost or placed around your plant roots.

A Neem Plant
A Neem Plant

Recipe for Neem Insecticide

This recipe is for or an 8-liter brew.


  1. 1 Cup Neem Oil
  2. ¼ Cup Black Soap (natural soap with plant oils – ensure your source is genuine)
  3. 8 liters of Neem Tea
  4. Mix all ingredients together thoroughly in your Back-Pack Sprayer
  5. Spray on plants.
    Note : For infected Plants, we recommend a daily application until the Plants are revived.
    As a preventive measure, we recommend a weekly regimen.

Original Publication by: Nature’s Hand Works

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