Updated: July 23, 2023

Introduction

Lithops, also known as living stones, are unique succulent plants that resemble rocks. These fascinating plants are native to South Africa and are popular among plant enthusiasts for their unusual appearance. However, like any other plant, lithops can be susceptible to pests. One common pest that can cause significant damage to lithops plants is borers. Borers are small insects that tunnel into plant stems, causing wilting, stunted growth, and even death if left untreated. In this article, we will discuss how you can effectively get rid of borers on your lithops plant and ensure its long-term health.

Identifying Borer Infestation

Before we delve into the methods of eliminating borers, it is crucial to be able to identify a borer infestation on your lithops plant. Look out for the following signs:
1. Wilting or drooping leaves: If your lithops plant’s leaves appear weak and start to wilt despite proper care, it could be a sign of borer activity.
2. Stunted growth: Borers can disrupt the growth of your lithops plant, causing it to remain small and underdeveloped.
3. Holes or tunnels: Inspect the stems of your lithops plant for small holes or tunnels created by the borers.
4. Frass or sawdust-like residue: Borers leave behind frass, which resembles sawdust or fine powder, near their entry points.

Manual Removal

When dealing with a small infestation, manual removal of borers can be an effective method. Follow these steps:
1. Carefully examine your lithops plant for any visible borers or holes in the stems.
2. Use a pair of sterilized tweezers or a toothpick to remove the borers from the plant.
3. Gently squeeze the stem to expel any larvae that may be present.
4. Dispose of the borers and larvae in a sealed plastic bag or by drowning them in soapy water.

Natural Predators

Introducing natural predators to your garden can serve as an environmentally friendly method of controlling borer populations. Some predators that feed on borers include birds, ladybugs, lacewings, and parasitic wasps. Attracting these beneficial insects to your garden can help keep borer populations in check. Here are a few ways to attract natural predators:
1. Provide birdhouses or bird feeders to encourage birds to visit your garden. Birds such as woodpeckers and wrens are known to feed on borers.
2. Plant nectar-rich flowers such as marigolds, daisies, and yarrow to attract ladybugs and lacewings.
3. Avoid using broad-spectrum insecticides that can harm beneficial insects. Instead, opt for organic insecticides or insecticidal soaps that specifically target borers.

Cultural Practices

Implementing certain cultural practices can significantly reduce the risk of borer infestations on your lithops plants. These practices create unfavorable conditions for borers, making your plants less susceptible to their attacks. Consider the following:
1. Proper watering: Borers are attracted to stressed plants, so maintaining proper watering practices is essential. Avoid overwatering or letting the soil become waterlogged.
2. Well-draining soil: Lithops require well-draining soil to prevent root rot and other moisture-related issues that can weaken the plant and make it more susceptible to borers.
3. Clean gardening tools: Borers can be introduced to your lithops plants through contaminated gardening tools. Ensure you clean your tools thoroughly before working with your lithops or other plants.
4. Remove affected parts: If you notice any signs of borer infestation, promptly remove and destroy the affected parts of the plant to prevent further spread.

Insecticides

In severe cases of borer infestations, manual removal and cultural practices may not be sufficient. In such instances, the use of insecticides can be considered. However, it is important to choose insecticides that are specifically labeled for borer control and safe for use on succulent plants. Follow these guidelines when using insecticides:
1. Read the label: Carefully read and follow all instructions provided by the manufacturer on the insecticide label. Pay attention to any safety precautions and recommended application rates.
2. Targeted application: Apply the insecticide directly to the affected areas of your lithops plant, focusing on the stems where borers are most likely to be present.
3. Timing: Apply the insecticide during the appropriate time of day and season when borers are most active.
4. Repeat applications: Depending on the severity of the infestation, you may need to repeat the insecticide application according to the manufacturer’s instructions.

Conclusion

Borer infestations can be detrimental to the health and appearance of your lithops plants. By promptly identifying and taking action against borers, you can effectively protect your lithops from their destructive activities. Remember to regularly inspect your plants, employ manual removal techniques, attract natural predators, implement cultural practices, and consider using targeted insecticides when necessary. With proper care and attention, your lithops plants will thrive pest-free for years to come.