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  • GrowNYC Education

Beginner Gardener Intensive: Natural Pest Management (Indoor & Outdoor)

Updated: Apr 6, 2021

All the resources from our virtual workshop! Read the Complete Q&A from the workshop.

See the video below for the recording of our "Natural Pest Management (Indoor & Outdoor)" workshop on June 11th, 2020.

Here are some guides to learn more about Integrated Pest Management and Garden Pests:

Here are the recipes for DIY sprays:

Outdoor Pest Spray


1 garlic bulb

1 small onion

1 teaspoon of powdered cayenne pepper

1 quart of water

1 tablespoon liquid dish soap


Chop, grind, or liquefy garlic and onion. Add cayenne pepper and mix with water. Steep 1 hour, strain through cheesecloth, then add liquid dish soap. Mix well. Spray your plants thoroughly, including the undersides of the leaves. Store the mixture for up to a week in a labeled, covered container in the refrigerator.

Note: wear rubber gloves and keep the mixture well away from your eyes and nose to avoid irritation

Indoor Pest Sprays

Soap Spray for aphids and spider mites:

Mix 5 tablespoons of organic dish soap with 4 cups of water in a bottle and spray plants with the solution.

The soap will dehydrate aphids and spider mites

You can use Dr. Bronner’s unscented or Mrs. Meyer’s liquid soap

Hydrogen Peroxide Spray for fungus gnats:

Mix 1 part 3% hydrogen peroxide with 4 parts water. Use this solution to water the soil of your plants for a couple of weeks. This should kill the fungus gnat larvae.

You can also place sticky traps, remove and replace the top 2 inches of soil with clean soil, and place gravel on top of the soil to discourage fungus gnats.

Read the Complete Q&A from the workshop.

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