Updated: July 14, 2023

Introduction

Parachute plants, also known as lerp psyllids or lerp insects, are small sap-sucking pests that infest various plant species, including the popular Parachute Plant (Grevillea spp.). These pests can cause significant damage to the plants if not controlled promptly. In this article, we will discuss effective methods to get rid of lerps on Parachute Plants and restore their health and beauty.

Understanding Lerps and their Impact

Lerps are tiny insects that belong to the family Psyllidae. They can be recognized by the protective shell-like structures they create on leaves and stems using their sugary excretions. These structures, known as lerps, serve as a shelter for the insects during their developmental stages.

While lerps may seem harmless at first glance, they can cause considerable harm to Parachute Plants. The insects feed on the plant’s sap, weakening it and stunting its growth. If left untreated, a severe infestation of lerps can lead to leaf drop, branch dieback, and even death of the plant.

Identifying Lerps on Parachute Plants

Before you start treating an infestation, it is crucial to correctly identify lerps on Parachute Plants. Look for small, shell-like structures attached to the leaves or stems of the plant. These structures are usually white or brown in color and have a distinctive appearance.

Upon closer inspection, you may find small nymphs or adult psyllids hiding beneath these lerps. Adult psyllids resemble tiny cicadas with wings folded flat over their bodies.

Effective Methods to Get Rid of Lerps

1. Manual Removal

One of the simplest ways to control minor lerp infestations is by manually removing them from the affected plant. Carefully inspect each leaf and stem, looking for lerps and the insects residing within them. Gently scrape off the lerps using your fingernail or a soft brush, ensuring not to damage the plant in the process.

2. Pruning Infested Areas

If the infestation is widespread or severe, pruning infested areas may be necessary. Trim off heavily infested leaves, stems, or branches, making sure to dispose of them properly to prevent further spread of the pests. Remember to sterilize your pruning tools before and after use to prevent cross-contamination.

3. Natural Predators

Introducing natural predators can be an effective long-term solution for controlling lerp populations. Ladybugs, lacewings, and certain parasitic wasps are known to feed on psyllids and can help keep their numbers in check. You can attract these beneficial insects by planting nectar-rich flowers nearby or purchasing them from reputable suppliers.

4. Neem Oil

Neem oil is a natural insecticide derived from the seeds of the neem tree (Azadirachta indica). It is known for its excellent pest control properties and low toxicity to beneficial insects. Dilute neem oil according to the instructions on the packaging and spray it onto the affected Parachute Plant, focusing on areas with lerps. Repeat the application every 7-10 days until the infestation subsides.

5. Horticultural Oil

Horticultural oils, such as mineral oil or petroleum-based oils, work by suffocating and smothering insects and their eggs. These oils can be sprayed onto Parachute Plants to control lerps effectively. Ensure you follow the manufacturer’s instructions regarding dilution ratios and application frequency.

6. Systemic Insecticides

In severe cases where other methods have failed, systemic insecticides can be used as a last resort. These insecticides are absorbed by the plant and transported throughout its tissues, making them toxic to lerps feeding on the sap. However, use systemic insecticides with caution and strictly follow the instructions to minimize environmental impact and protect beneficial insects.

Prevention is Key

Preventing lerp infestations is always better than dealing with them after they occur. Here are some preventive measures to keep your Parachute Plants lerp-free:

  • Regularly inspect your plants for signs of infestation, especially during the warm seasons when lerps are most active.
  • Practice good garden hygiene by removing fallen leaves and debris promptly, as they can harbor pests.
  • Avoid over-fertilizing your plants, as excessive nitrogen can attract psyllids.
  • Maintain a healthy plant through proper watering, adequate sunlight, and regular feeding.

Conclusion

Lerps on Parachute Plants can be a nuisance, but with the right approach, you can effectively control and eliminate these pests. Remember to identify the infestation correctly, choose the appropriate treatment method, and focus on prevention to keep your plants healthy and thriving. By following these tips, you can ensure your Parachute Plants remain beautiful additions to your garden without being plagued by lerps.