Updated: April 6, 2023

Earwigs are common household pests that can cause damage to plants, fruits and vegetables. These insects are known for their pincer-like appendages and nocturnal habits. While they may not pose a direct threat to humans, earwigs can be a nuisance when they invade homes and gardens.

Controlling earwig infestation is important for maintaining healthy gardens and protecting crops. In this article, we will explore the use of ageratum as a natural remedy for repelling earwigs.


Ageratum is a flowering plant that belongs to the Asteraceae family. The plant is native to Central America and is commonly used as an ornamental plant in gardens due to its bright blue flowers.

In addition to its aesthetic value, ageratum has been used in folklore as a natural insect repellent. It is believed that the scent of the plant can repel mosquitoes, flies and other insects.

Ageratum Plant Description and Uses

Ageratum plants typically grow up to 18 inches tall and have round or heart-shaped leaves. The flowers are small, fluffy, and come in shades of blue, pink, and white.

The plant has several uses including ornamental purposes, medicine, and insect control. In traditional medicine, ageratum has been used to treat fever, headaches, and gastrointestinal problems.

Folklore about Ageratum Repelling Earwigs

In addition to its medicinal uses, ageratum has been used for centuries in folklore as a natural insect repellent. According to legend, farmers would plant ageratum around their homes and crops to keep pests away.

One of the most popular beliefs is that ageratum can repel earwigs. This theory is based on the idea that the scent of the plant is offensive to earwigs, causing them to avoid the area where it is planted.

Scientific Studies

Research on the Effectiveness of Ageratum in Repelling Earwigs

While there is no conclusive evidence that ageratum can repel earwigs, several studies have been conducted to explore its potential as an insect repellent.

In a study published in the Journal of Chemical Ecology, researchers found that certain compounds found in ageratum had insecticidal properties. The study concluded that these compounds could be effective in controlling earwig populations.

Analysis of the Active Compounds in Ageratum That Repel Insects

The active compounds in ageratum that have insect-repelling properties are mainly terpenoids and flavonoids. Terpenoids are organic compounds that are commonly found in plants and have a strong odor that can repel insects.

Flavonoids are also organic compounds found in plants that have antioxidant properties. They are believed to contribute to the plant’s defense against pests by inhibiting feeding behavior.

Practical Application

Methods for Using Ageratum to Control Earwig Infestation

To use ageratum for controlling earwig infestation, you can do the following:

  • Plant ageratum around your garden or home
  • Crush fresh ageratum leaves and place them around areas where earwigs are present
  • Create a spray using dried ageratum leaves by steeping them in water overnight

Tips for Planting and Caring for Ageratum Plants

If you decide to plant ageratum in your garden, here are some tips for caring for your plants:

  1. Plant ageratum in well-draining soil
  2. Water the plants regularly, but avoid overwatering as it can lead to root rot
  3. Fertilize the plants with a balanced fertilizer every four weeks during the growing season
  4. Deadhead spent blooms regularly to encourage new growth
  5. Protect plants from frost by covering them with blankets or moving them indoors during cold weather


The use of ageratum as a natural remedy for repelling earwigs is still a topic of debate among experts. While some studies suggest that certain compounds found in ageratum may be effective in controlling earwigs, more research is needed to determine its efficacy.

If you decide to use ageratum for controlling earwig infestation, it is important to remember that it should not be used as a sole method of pest control. It should be used in conjunction with other integrated pest management strategies such as sanitation practices and physical barriers.

In conclusion, while there is no definitive evidence supporting the use of ageratum for controlling earwig infestation, it remains a promising natural remedy worth exploring further.