Updated: July 9, 2023

If you are a plant enthusiast, you may have encountered the frustrating problem of lerps on your Hoya Heart plant. Lerps are small, white or brown protective coverings that shield tiny sap-sucking insects called psyllids. These pests can cause significant damage to your plants if left untreated. In this article, we will discuss effective methods to get rid of lerps and protect your Hoya Heart plant.

Understanding Lerps and Psyllids

Before we delve into the solutions, it is important to understand the life cycle and habits of lerps and psyllids. Psyllids are small insects that feed on plant sap, causing stunted growth, leaf distortion, and even death in severe cases. They produce a honeydew-like substance, which promotes the growth of black sooty mold on the plants.

Lerps, on the other hand, are the protective coverings secreted by psyllid nymphs as they feed. These coverings provide shelter and camouflage for the nymphs, making them difficult to detect and eliminate. Getting rid of both the lerps and psyllids is crucial for the health and vitality of your Hoya Heart plant.

Manual Removal

One of the simplest methods to control lerps is through manual removal. Start by inspecting your Hoya Heart plant carefully for any signs of lerps or psyllids. Look for small white or brown bumps on the leaves or stems.

Once you locate these pests, use a cotton swab dipped in rubbing alcohol to gently rub off the lerps. Make sure to target both the protective covering and the nymph underneath. Take extra care while removing the lerps as they are delicate and can easily break apart. Repeat this process regularly to prevent re-infestation.

Natural Predators

Introducing natural predators is an effective biological control method for managing psyllids and lerps. Ladybugs, lacewings, and predatory mites are natural enemies of these pests. You can purchase these beneficial insects from garden centers or online suppliers.

Release these predators near your Hoya Heart plant, and they will feed on the psyllids, reducing their population. This approach is eco-friendly and helps maintain the balance of nature in your garden. However, it may take some time for the predator population to build up and effectively control the infestation.

Insecticidal Soap

Insecticidal soap is a safe and effective option for controlling lerps on Hoya Heart plants. This soap is made from natural ingredients and disrupts the cell membranes of insects, causing them to dehydrate and die.

To use insecticidal soap, dilute it according to the instructions on the package. Then, spray the solution directly on the affected areas of your plant, ensuring complete coverage. Repeat this process every few days until you eliminate all the lerps and psyllids.

Neem Oil

Neem oil is another organic solution that can be used to get rid of lerps on Hoya Heart plants. It is derived from the seeds of the neem tree and acts as both an insecticide and a fungicide.

Mix neem oil with water according to the instructions on the bottle, and apply it to your plant using a spray bottle. Make sure to cover both sides of the leaves thoroughly. Neem oil works by disrupting the feeding and reproductive behavior of psyllids, helping to control their population. Repeat this treatment every one to two weeks until the infestation is under control.

Horticultural Oil

Horticultural oil is a petroleum-based product that suffocates pests by coating their bodies and blocking their spiracles (breathing pores). It is effective against lerps and other soft-bodied insects.

Before applying horticultural oil to your Hoya Heart plant, make sure to read and follow the instructions on the label. Dilute the oil as directed and spray it evenly on all parts of the plant. To achieve maximum effectiveness, apply horticultural oil during mild weather conditions when temperatures are between 40°F and 90°F.

Prevention Tips

Prevention is always better than cure when it comes to plant pests. Here are some tips to help prevent lerp infestations on your Hoya Heart plant:

  1. Regularly inspect your plants: Inspect your plants periodically for any signs of pests or diseases. Early detection can help you tackle infestations before they become severe.

  2. Maintain proper hygiene: Clean up fallen leaves and debris around your plants as they can provide hiding places for pests.

  3. Avoid over-fertilization: Excessive fertilization can attract pests. Follow the recommended dosage for your Hoya Heart plant.

  4. Monitor humidity levels: Psyllids thrive in humid environments. Use a dehumidifier if necessary to keep humidity levels in check.

  5. Isolate infected plants: If you notice an infestation on one plant, isolate it from other healthy plants to prevent the spread of pests.

By following these prevention tips and utilizing the methods mentioned above, you can effectively get rid of lerps on your Hoya Heart plant and maintain its health and beauty. Remember to be patient and persistent in your efforts, as it may take some time to see results.