Updated: February 12, 2023

Earwigs are common garden pests that can cause damage to crops and flowers. These creepy crawlies are known for their distinctive pincers, which they use to defend themselves and capture prey. While earwigs may not pose a direct threat to humans, they can be a nuisance in the garden. In this article, we will explore whether lemongrass is an effective solution for repelling earwigs.

What is Lemongrass?

Lemongrass is a herb that is widely used in cooking and medicinal purposes. This plant is native to tropical regions and can grow up to 6 feet tall. It has a distinctive lemony scent and taste, which makes it a popular ingredient in Asian cuisine. Apart from its culinary uses, lemongrass is also known for its insect-repellent properties.

Uses of Lemongrass

Lemongrass has been used for centuries as a traditional medicine in many cultures. It is believed to have anti-inflammatory, analgesic, and antipyretic properties. It is also used as a natural remedy for digestive problems, respiratory issues, and anxiety disorders. Additionally, lemongrass essential oil is commonly used in aromatherapy for its calming and relaxing effects.

How does it work against insects?

Lemongrass contains citral, a compound that has insect-repellent properties. Citral works by disrupting the nervous system of insects, making it difficult for them to feed, mate or lay eggs. This compound is also found in other plants such as lemon balm and lemon verbena.

Does Lemongrass Repel Earwigs?

Lemongrass has been found to be effective against various insects such as mosquitoes, flies, and ants. However, there are limited studies on its effectiveness against earwigs specifically. Nonetheless, anecdotal evidence from gardeners suggests that lemongrass can help repel earwigs.

Scientific studies on the effectiveness of lemongrass on earwigs

A study conducted by researchers at the University of Minnesota found that citral was effective against several insect species including houseflies and fruit flies. However, the study did not include earwigs as one of the test subjects.

Anecdotal evidence from gardeners who have used lemongrass

Many gardeners have reported success in using lemongrass to repel earwigs. They have found that planting lemongrass around their garden or using a lemongrass spray has helped reduce the number of earwigs in their yard.

How to use lemongrass to repel earwigs?

Growing lemongrass in the garden

To use lemongrass as an insect repellent in your garden, you can plant it directly in the ground or in containers. Lemongrass prefers well-drained soil and plenty of sunlight. You can also propagate lemongrass by dividing the root ball or rooting cuttings in water before planting.

Making a lemongrass spray for earwig control

To make a lemongrass spray for earwig control, you will need:

  • A handful of fresh or dried lemongrass leaves
  • A quart of water
  • A spray bottle

Boil the water and add the lemongrass leaves. Let it steep for several hours or overnight. Strain the mixture and pour it into a spray bottle. Spray directly on plants or around areas where you have seen earwig activity.

Using lemongrass essential oil

You can also use lemongrass essential oil as an insect repellent. Add a few drops of lemongrass essential oil to a carrier oil such as coconut oil or olive oil and apply it to your skin before going outdoors. You can also diffuse lemongrass essential oil indoors to repel insects.

Other natural remedies for earwig control

In addition to lemongrass, there are other natural remedies that you can use to control earwig infestations:

  • Diatomaceous earth: A natural insecticide made from fossilized diatoms that can help control many pests including earwigs.
  • Neem oil: A plant-based oil that can be applied directly to plants or used as a soil drench to control various pests.
  • Garlic spray: A homemade spray made by blending garlic cloves with water and straining the mixture before spraying on plants.


In conclusion, while there is limited scientific evidence on the effectiveness of lemongrass against earwigs specifically, many gardeners have reported success in using this herb as an insect repellent. Whether you choose to plant it in your garden or make a spray using its leaves or essential oils, natural remedies like lemongrass offer an eco-friendly alternative to chemical pesticides. So why not give it a try next time you’re dealing with pesky earwigs in your garden?