How to Make and Use Onion Peel Liquid Solution for Plant Growth?

Onion Peel Liquid Solution for Plant Growth
Onion Peel Liquid Solution for Plant Growth

Onion peels, usually discarded as waste, can be repurposed as a natural solution to enhance plant growth. The peel of an onion contains many nutrients that are beneficial for plants, such as sulfur, potassium, and nitrogen. Making a liquid solution out of onion peels is an easy and cost-effective way to provide your plants with these essential nutrients. In this article, we will discuss in detail how to make and use onion peel liquid solution for plant growth.

Materials Required:

  • Onion peels (about 2 cups)
  • Water (4 Litres)
  • A large pot with lid
  • Strainer
  • Spray bottle


  1. Collect onion peels: Start by collecting onion peels. You can collect them from your kitchen scraps or ask your local grocery store for their waste onion peels.
  2. Boil water: Fill a large pot with water (4 Litres) and bring it to a boil.
  3. Add onion peels: Once the water has boiled, add the onion peels to the pot. You can use a spoon or spatula to stir them in.
  4. Simmer: Reduce the heat to a low simmer and cover the pot with a lid. Let the onion peels simmer for at least an hour. The longer you simmer, the stronger the solution will be.
  5. Strain: After simmering for an hour or longer, turn off the heat and let the onion peel solution cool down. Once it has cooled down, strain the solution using a strainer. You can use a cheesecloth or coffee filter to remove any fine particles.
  6. Transfer to a spray bottle: Transfer the solution to a spray bottle for easy application.

Application: Once you have made the onion peel liquid solution, you can use it on your plants to promote growth. Here are some ways to use the solution:

  1. Fertilizer: Use the solution as a fertilizer by spraying it directly on the soil around the base of the plants. This will provide the soil with essential nutrients, including potassium, nitrogen, and sulfur.
  2. Foliar spray: You can also use the onion peel liquid solution as a foliar spray by spraying it directly on the leaves of the plants. This will help the plants to absorb the nutrients through their leaves. This method is particularly useful for plants that have nutrient deficiencies.
  3. Pest control: Onion peels have insecticidal properties that can help to repel pests such as aphids and spider mites. To use the solution as a pest control, spray it directly on the affected areas of the plant.


  • Use organic onions to avoid any pesticide or chemical residue on the onion peels.
  • Use the onion peel solution immediately after making it for maximum effectiveness.
  • Store any unused solution in a sealed container in the refrigerator for up to a week.

Conclusion: Onion peel liquid solution is an effective and natural way to provide your plants with essential nutrients. It’s easy and cost-effective to make and can be used as a fertilizer, foliar spray, and pest control. By using onion peel liquid solution, you can promote healthy growth in your plants and contribute to a sustainable and eco-friendly garden.

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