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How to Get Rid of Roaches in Flower Beds

Updated April 16, 2019

Cockroaches are insects that are sometimes referred to as waterbugs. They belong to the order Blattaria. Although most people commonly think about cockroaches invading homes, it is also possible for cockroaches to be lurking about your flower gardens, hiding in the mulch. You will be happy to discover that you have several ways to get the cockroaches out of your flower garden, including some all-natural methods.

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  1. Introduce parasitic wasps or nematodes into your flower garden. Both are natural predators of the cockroach and will kill the cockroaches for you. You can purchase the wasps or nematodes at any large garden centre or online.

  2. Repel the roaches by creating an all-natural repellent. Boil 1 quart of water and place a chopped clove of garlic, small chopped onion and 1 tbsp of cayenne pepper in it. Wait one hour and strain through a piece of cheesecloth. Transfer to an empty spray bottle and add 1 tbsp of dish soap to help the ingredients stick. Spray around your flower garden liberally to repel the cockroaches.

  3. Mix 177ml. of boric acid and 113gr. of sugar. Sprinkle this mixture around your flower garden. The cockroaches will walk over it and even eat some of it. Once the boric acid is ingested, the cockroach will die. Boric acid can be used safely around flowers in small doses since it contains boron, a nutrient required by plants.

  4. Sprinkle baking soda around the perimeter of your flower garden. Baking soda is another repellent that works on cockroaches. You may even want to leave an open box of baking soda at each corner of your flower bed.

  5. Tip

    Remove any clutter in your lawn that cockroaches could hide in. Keeping yard debris cleaned up, bushes trimmed and lids on dustbins will also help deter cockroaches from choosing your property to invade.


    Use boric acid with caution around small dogs and cats.

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Things You'll Need

  • Parasitic wasps
  • Nematodes
  • 1 quart water
  • 1 clove garlic
  • 1 small onion
  • 177ml. boric acid
  • 113gr. sugar
  • 1 tbsp cayenne pepper
  • Cheesecloth
  • Spray bottle
  • 1 tbsp dish soap
  • Baking soda

About the Author

Alicia Bodine

Alicia Bodine has been a professional writer for 13 years. She has produced thousands of articles for online publications such as Demand Studios, GoBankingRates and WiseGeek. Bodine is passionate about gardening, travel, education and finance. She has received awards for being a top content producer.

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