Updated: July 11, 2023

Lerps are small, sap-sucking insects that can infest and damage stevia plants. These pests create a protective covering over themselves called a lerp, which can make it difficult to get rid of them. However, with the right approach and some patience, you can effectively eliminate lerps from your stevia plant and prevent further damage. In this article, we will discuss several methods to help you get rid of lerps on your stevia plant.

Understanding Lerps

Before we dive into the methods to eliminate lerps, it’s important to understand what they are and how they affect your stevia plant. Lerps are tiny insects that belong to the group of psyllids. They feed on the sap of the plant and produce a protective covering made of their excretions and wax. This covering is known as a lerp. The lerp not only protects the insects from predators but also acts as a shield against insecticides.

Lerps are commonly found on the undersides of leaves, especially along the veins. They can cause stunted growth, yellowing of leaves, and overall weakening of the stevia plant if left untreated. Therefore, it’s crucial to take timely action to eliminate these pests.

Natural Methods to Get Rid of Lerps

  1. Pruning and Removal: Start by inspecting your stevia plant for signs of lerp infestation. Carefully prune and remove heavily infested leaves or branches. Dispose of them properly to prevent further spreading of the insects.

  2. Water Sprays: Use a strong water spray or hose to dislodge lerps from the plant. Direct the water jet towards the undersides of leaves where lerps are commonly found. Repeat this process every few days to ensure effective control.

  3. Neem Oil: Neem oil is a natural insecticide that can be effective against lerps. Dilute neem oil according to the manufacturer’s instructions and spray it on the affected parts of the stevia plant. Neem oil disrupts the insects’ life cycle and acts as a repellent, making it harder for them to thrive.

  4. Insecticidal Soap: Insecticidal soap is another natural remedy that can help eliminate lerps. Mix a mild solution of insecticidal soap with water and spray it on the infested areas. The soap suffocates the insects by breaking down their protective lerp covering.

Chemical Control for Severe Infestations

If the lerp infestation on your stevia plant is severe and natural methods have not been effective, you may need to resort to chemical control. Before using any chemicals, it’s important to read and follow the instructions provided by the manufacturer.

  1. Systemic Insecticides: Systemic insecticides are absorbed by the plant and distributed throughout its tissues, making them an effective option for controlling lerps. Apply a systemic insecticide according to the recommended dosage and frequency. This method ensures that the entire plant is protected, including new growth.

  2. Contact Insecticides: Contact insecticides are sprayed directly on the lerps to kill them on contact. Look for insecticides labeled specifically for psyllids or lerps and apply them according to the instructions. It’s important to thoroughly cover all infested areas, including the undersides of leaves.

Preventing Lerp Infestation

Prevention is always better than cure when it comes to lerp infestations. Here are some preventive measures you can take to avoid future problems:

  1. Regular Inspections: Keep a close eye on your stevia plants and inspect them regularly for signs of lerp infestation or any other pests. Early detection can make treatment easier and more effective.

  2. Proper Plant Care: Healthy plants are less susceptible to pests and diseases. Provide your stevia plants with adequate sunlight, water, and nutrients to promote strong growth. Avoid over-fertilizing, as it can attract pests.

  3. Encourage Natural Predators: Introduce beneficial insects, such as ladybugs or lacewings, to your garden. These natural predators can help control lerp populations by feeding on them.

  4. Crop Rotation: If you grow stevia plants in a garden or outdoor area, practice crop rotation. This helps disrupt the life cycle of pests and reduces the chances of reinfestation.

In conclusion, getting rid of lerps on your stevia plant requires a combination of natural methods and, in severe cases, chemical control. Regular inspections and proper plant care are essential for preventing lerp infestations in the first place. By following these guidelines and taking appropriate action, you can keep your stevia plants healthy and free from lerps.