A homemade spray to keep plants pest-free is a great way to protect your green friends in a natural and eco-friendly way! Many ingredients you probably already have at home can serve as effective pest control agents.

Here are some tried-and-tested recipes and tips on how to make such a spray:

Basic Soap-Based Pest Control Spray:

This is a very versatile spray that works against many common pests such as aphids, spider mites, whiteflies, and thrips by dissolving their outer protective layer.

Ingredients:

1 liter of water (preferably distilled or boiled and cooled)

1-2 teaspoons of mild, fragrance-free liquid soap (not dish soap with bleach or degreaser)
Instructions:

Thoroughly mix the water and soap in a spray bottle.

Gently spray the affected parts of the plant, including the undersides of the leaves, where many pests congregate.

Repeat the application every few days or as needed.

Important: Always test the spray on a single leaf first to ensure it does not cause any adverse reactions, especially on sensitive plants.

Garlic-Chili Spray (against sucking and biting insects):

Garlic and chili have strong repellent properties against many pests.

Ingredients:

4-5 garlic cloves, chopped

1-2 fresh chili peppers (depending on desired spiciness), chopped (or 1 teaspoon chili powder)

1 liter of water

1 teaspoon mild liquid soap (as an emulsifier)
Instructions:

Pour the water over the chopped garlic and chili peppers in a pot.

Bring the mixture to a boil, then reduce the heat and simmer for about an hour.

Let the mixture cool completely, then strain it through a fine sieve or a cloth to remove the solids.

Add the liquid soap as an emulsifier and mix well.

Pour the spray into a spray bottle and generously spray the affected plants.

Again, test on a single leaf before applying to a large area.

Neem Oil Spray (broad-spectrum against many pests and fungal diseases):

Neem oil is a natural insecticide, fungicide, and acaricide that can effectively control many pests by disrupting their growth and reproduction.

Ingredients:

1 liter of water (warm water helps with emulsification)
1 teaspoon of pure neem oil
½ teaspoon of mild liquid soap (as an emulsifier)
Instructions:

Thoroughly mix the neem oil and soap in a small bowl.

Add this mixture to the warm water in the spray bottle and shake vigorously to form an emulsion.

Spray the plants generously, including the undersides of the leaves.

Repeat the application every 7-14 days or as needed.

Neem oil should preferably be applied in the evening or on a cloudy day, as it can cause leaf burn in direct sunlight.

Other useful ingredients and tips:

Onions: Similar to garlic, onions can act as a deterrent. Use an onion infusion, just like you would a garlic spray.

Vinegar (diluted): A highly diluted vinegar solution (e.g., 1 tablespoon of vinegar to 1 liter of water) can be effective against some pests, but it should be used very carefully and always tested first, as vinegar can damage leaves.

Alcohol (diluted): Rubbing alcohol (isopropyl alcohol), highly diluted (e.g., 1 part alcohol to 3 parts water), can be applied to cotton swabs to remove individual pests like mealybugs directly. Do not spray over large areas, as it can dry out the leaves.

Regular inspection: Check your plants regularly for pests so you can take early action.

Good ventilation: Ensure good air circulation around your plants to prevent fungal diseases and pest infestations.

Healthy plants are more resilient: Make sure your plants have the right conditions (light, water, nutrients) for healthy growth, as healthy plants are less susceptible to pests.

Since it’s evening in Ukraine and many are preparing their plants for the night, it’s a good time to think about natural pest control methods. These homemade sprays are an environmentally friendly and often inexpensive way to keep your plants healthy and pest-free!