How to Use Neem Oil in a Sprayer for the Garden

28 comments / Posted on by Anitha N

How to Use Neem Oil in a Sprayer for the Garden

Neem oil is a derivative of the Asian evergreen tree. A natural steroid, it causes insects to lose their appetite and lose interest in laying eggs.

Neem oil uses: Neem oil is used as an organic pesticide. It also helps in avoiding the below scenarios. 

  • Insects: It kills or repels many harmful insects and mites, including aphids, whiteflies, snails, nematodes, mealybugs, cabbage worms, gnats, moths, cockroaches, flies, termites, mosquitoes, and scale. It kills some bugs outright, attacks the larvae of others, and repels plant munchers with its bitter taste.
  • Fungus: It is also effective in preventing fungal diseases such as black spot, anthracnose, rust, and mildew.
  • Disease: As if that wasn’t enough, neem oil also battles viruses that can harm plants.


How to prepare Neem oil solution for sprayer

To prepare 1 liter of a 0.5 % dilution of neem oil spray we need the following measurement. 

  • 5 ml (1 tsp) neem oil (use pure, cold pressed oil).
  • 1-2 ml (1/3 tsp) insecticidal soap or other detergent.
  • 1 liter (1 quart) warm water.

Here are the steps to be followed to prepare neem oil solution.

  1. Take 1 liter of warm water and 1-2 ml (1/3 tsp) of insecticidal soap or other detergent.
  2. Mix warm water and detergent and prepare a solution first. Make sure it dissolves completely.
  3. Take 5 ml or 1 tsp of neem oil and slowly add the oil while stirring vigorously.
  4. Fill the mixture into your sprayer. Keep shaking or otherwise stirring the mix while spraying. Use the mixture within eight hours.

The ideal neem garden spray would be 0.5% to 1% dilution. Depending on the purpose you may want to increase that to up to 2%. If you have trouble dissolving the oil, use more detergent.

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  • Posted on by AParna

    I did prepared neem spray as u said but did not help for my hibiscus and rose ?! ?
    Advice something else, please!

  • Posted on by Aparna

    Why’s my rose plant full of buds dried overnight?

  • Posted on by AParna

    ? I want to know why my tuberose / Rajanigandha leaves became soggy?

  • Posted on by JAnhavi

    I see a lot of queries but no answers. Do u answer individually?

  • Posted on by RV

    The guaba (amrood) tree in my backyard grows plenty of fruits during season time. But thre are insects inside. Can neem oil be useful for growing insect free fruits? How to use it? Is there any other useful organic pesticide for it? 2. How to grow my amroods large?

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