The best insecticide and home-made repellent for your plantation

homemade repellent insecticides

The Best Homemade Cannabis Insecticide and Repellent Is Organic and Can Be Made Easily With Store-Bought Products

One of the hardest issues to deal with in growing cannabis is the pests and insects that plague your precious garden. But you don't necessarily want to opt for store-bought products to repel them – and you're not required or advised to do so… Insecticides and repellents are generally toxic. Here's where to start to make the best homemade insecticide and repellent.

Best pest sprays for cannabis.

Most homemade insecticides for cannabis use ingredients that you already have in your kitchen, like soap, garlic, chili powder, and oil.

These DIY sprays will help you rid your garden of pests such as aphids, mites, whiteflies and beetles.

Oil-based insecticides

Oil-based insecticides for cannabis are made by combining vegetable oil, such as rapeseed, soybean, or cottonseed oil with other ingredients.

An oil-based spray works by suffocating the pores of insects like aphids, and mites.


  • 1 cup of oil
  • 1 spoonful of Marseille or Castile soap
  • 1 quart of water

Recipe :

  • Mix 1 cup of oil with 1 tablespoon of Marseille soap mix well
  • Take 2 tablespoons of the mixture and dilute it in 1 liter of water
  • Put in a spray bottle and apply on your cannabis

Essential oils

You can also try vaporizing essential oils, like eucalyptus, rosemary, lemon, and cinnamon. Just mix them, dilute them with water and spray them directly on your plants.

Other growers prefer to apply other essential oils like cinnamon, cloves or cilantro directly to the cannabis leaves to repel pests. These oils can be used safely on cannabis plants.

However, we recommend that you do not apply essential oils directly to your buds, as they could alter the flavor of your herb.

Soap organic insecticide

Soap-based insecticide is very similar to oil-based insecticides, soap-based insecticides are made by simple combination of soap and water, without oil.

It can be sprayed on your plants anytime, but it is recommended that you apply it at dawn or dusk.

Soap insecticides are excellent for killing whiteflies, mites and beetles.


  • 1 ½ tablespoon of mild soap such as Castile (or Marseille) soap and 1 pint of water

Recipe :

  • Mix soap and water.
  • Put in a spray bottle and apply directly to the plants.

Garlic insecticide

While garlic doesn't exactly kill bugs, it's a great bug repellant, and it's also a great way to slow down or prevent infestations.


  • 2 whole garlic cloves (no cloves)
  • ½ cup of vegetable oil
  • 1 teaspoon of mild soap
  • 2 liters of water

Recipe :

  • Mash the garlic bulbs with a little water.
  • Let the garlic mash overnight
  • Pass the garlic through a sieve
  • Mix garlic with ½ cup vegetable oil, 1 tsp. of mild soap and 1 liter of water.
  • Remove 1 cup of the mixture and mix with another quart of water.
  • Shake well and put in a spray bottle Apply directly to plants

Chili repellent (chili pepper)

Chili, like garlic, is also a natural insect repellant. While chili does not kill insects, it discourages them, slows them down, or prevents an infestation.


  • ½ cup fresh peppers or 1 tablespoon chili powder
  • Liquid soap, like Castile or Marseille soap
  • 1 quart of water M

Recipe :

  • Mash the peppers in 1 cup of water
  • Add 1 quart of water and bring to a boil.
  • Allow the mixture to cool
  • Drain the peppers
  • Add a few drops of liquid soap
  • Put the mixture in a spray bottle and apply directly to the plants.

How to use chili powder repellant

  • Mix 1 tablespoon of powder with a few drops of soap and 1 liter of water
  • Put the mixture in a spray bottle and apply directly to the plants.

Insecticide made from tomato leaves

The tomato is a member of the plant family that contains alkaloids which can be harmful to insects. Therefore, the leaves of a tomato plant can be used as an insect repellent, just like garlic and chili. In fact, these alkaloids are particularly good at keeping aphids and other insects away from your weed.

Recipe :

  • Mix 1 tablespoon of powder with a few drops of soap and 1 liter of water
  • Put the mixture in a spray bottle and apply directly to the plants.
Tags : Agriculture/Growing
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Weed media broadcaster and communications manager specializing in legal cannabis. Do you know what they say? knowledge is power. Understand the science behind cannabis medicine, while staying up to date with the latest health related research, treatments and products. Stay up to date with the latest news and ideas on legalization, laws, political movements. Discover tips, tricks and how-to guides from the most seasoned growers on the planet as well as the latest research and findings from the scientific community on the medical qualities of cannabis.