Updated: August 2, 2023

If you have a Mimosa sensitive plant (Mimosa pudica) in your garden or indoor space, you may have noticed small, white, waxy bumps on its leaves. These bumps are called lerps and are produced by insects known as psyllids. While lerps themselves may not be harmful to the plant, they can be unsightly and indicate an infestation. In this article, we will discuss how to get rid of lerps on your Mimosa sensitive plant and prevent future infestations.

Understanding Psyllids and Lerps

Psyllids are small, sap-sucking insects that belong to the family Psyllidae. They are commonly found on various plants, including the Mimosa sensitive plant. Psyllids use their piercing mouthparts to extract sap from the leaves of the plant, causing damage and weakening the plant over time.

Lerps are protective coverings produced by psyllids. They serve as a shield for the insects, protecting them from predators and environmental factors. Lerps appear as small, white or gray bumps on the leaves of the Mimosa sensitive plant. Inside these bumps, psyllids live and feed on the sap of the plant.

Identifying an Infestation

To effectively get rid of lerps on your Mimosa sensitive plant, it is essential to identify if there is an infestation present. Look for the following signs:

  1. Presence of lerps: Check the leaves of your plant for small, white or gray bumps. These bumps are typically found on the upper surface of the leaves.

  2. Yellowing or wilting leaves: Psyllid feeding can cause yellowing or wilting of leaves. If you notice these symptoms along with lerps, it is likely that your plant is infested.

  3. Sticky residue: Psyllids excrete a sticky substance known as honeydew. If you see a sticky residue on the leaves or surrounding surfaces, it may indicate an infestation.

Getting Rid of Lerps

Once you have identified an infestation of lerps on your Mimosa sensitive plant, it’s time to take action. Here are some effective methods to get rid of lerps:

1. Manual Removal

The first step is to manually remove the lerps from the plant. Use a soft brush or a cotton swab dipped in rubbing alcohol to gently scrub off the lerps. Be careful not to damage the leaves while doing so. This method is suitable for small infestations or when the lerps are concentrated in specific areas.

2. Pruning

If the infestation is severe and widespread, pruning may be necessary. Carefully inspect your plant and identify the heavily infested branches or leaves. Prune these affected parts using clean, sharp pruning shears. Dispose of the pruned material in sealed plastic bags to prevent the spread of psyllids.

3. Insecticidal Soap

Insecticidal soap can be an effective solution for getting rid of lerps on Mimosa sensitive plants. Look for a soap specifically formulated for use on houseplants or ornamental plants. Dilute the soap according to the instructions provided and spray it directly onto the affected leaves, making sure to cover both sides of the leaves thoroughly. Repeat this process every 7-10 days until the infestation is under control.

4. Neem Oil

Neem oil is another natural remedy that can be used to combat psyllid infestations. Mix neem oil with water according to the instructions on the product label and spray it onto the affected leaves. Neem oil works by disrupting insect feeding and growth, ultimately killing them off. Repeat this treatment every 7-14 days until the infestation is eradicated.

5. Beneficial Insects

Introducing beneficial insects, such as ladybugs or lacewings, can help control psyllid populations naturally. These predatory insects feed on psyllids, reducing their numbers and preventing further infestations. You can purchase beneficial insects from garden centers or online suppliers. Before releasing them, make sure to follow the instructions provided to ensure effective control.

Preventing Future Infestations

To prevent future infestations of lerps on your Mimosa sensitive plant, follow these preventive measures:

  1. Regularly inspect your plant: Check your plant regularly for signs of psyllids or lerps. Early detection allows for quick intervention and prevents the infestation from spreading.

  2. Maintain plant health: A healthy and vigorous plant is less susceptible to pest infestations. Provide your Mimosa sensitive plant with proper care, including adequate sunlight, watering, and appropriate fertilization.

  3. Remove weeds and debris: Psyllids often reside on weeds or debris near the host plants. Keep the area around your Mimosa sensitive plant weed-free and remove any fallen leaves or debris promptly.

  4. Quarantine new plants: Before introducing new plants to your garden or indoor space, inspect them thoroughly for signs of pests or diseases. Quarantine them for a few weeks to ensure they are not carrying any hidden infestations.

By following these methods and preventive measures, you can successfully get rid of lerps on your Mimosa sensitive plant and maintain a healthy, thriving plant. Remember to be consistent in your efforts and monitor your plant regularly to catch any signs of re-infestation early on.

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