Updated: July 7, 2023

Lithops, commonly known as “living stones,” are unique and fascinating plants that resemble pebbles or stones. These succulents are native to South Africa and have adapted to survive in harsh desert conditions. However, just like any other plant, they can become susceptible to pests, including thrips.

Thrips are tiny insects that feed on the sap of plants, causing damage to the leaves and flowers. They can be particularly problematic for lithops as their small size makes it challenging to detect their presence until the damage is already done. In this article, we will discuss how to identify thrips infestation in lithops and provide effective methods to get rid of them.

Identifying Thrips Infestation

Thrips are slender insects, usually measuring around 1-2 mm in length. They have long antennae and fringed wings, which give them a distinctive appearance. Thrips can vary in color from yellowish-brown to black. However, due to their small size and ability to hide in tight spaces, they can be difficult to spot with the naked eye.

The first signs of thrips infestation in lithops are usually visible on the leaves. Look out for silver or bronzed streaks on the surface of the leaves, which indicate feeding damage. As thrips multiply, you may also notice distorted or discolored leaves, stunted growth, and premature dropping of flowers.

Prevention is Key

Preventing thrips infestation is always better than having to deal with an existing problem. Here are some preventive measures you can take to keep your lithops plant healthy and free from thrips:

1. Quarantine New Plants

When introducing new plants into your collection, it is essential to quarantine them for a few weeks before placing them near your lithops. This will help prevent any potential pest infestations from spreading to your existing plants.

2. Maintain Good Air Circulation

Thrips thrive in warm and stagnant environments. By ensuring good air circulation around your lithops, you can create an inhospitable environment for thrips to survive and reproduce. Place your plants in areas with adequate ventilation or use a small fan to keep the air moving.

3. Remove Infected Plants

If you notice any signs of thrips infestation in one of your lithops plants, it is crucial to isolate and remove the infected plant immediately. This will prevent the pests from spreading to neighboring plants.

Getting Rid of Thrips

If your lithops plant is already infested with thrips, it is important to take action promptly to prevent further damage. Here are some effective methods for getting rid of thrips:

1. Prune and Dispose

Start by pruning off any heavily infested leaves or flowers from your lithops plant. Thrips tend to congregate on the new growth, so removing these damaged parts will help reduce their population and prevent them from spreading. Make sure to dispose of the pruned material properly, away from your other plants.

2. Wash and Wipe

Thoroughly wash your lithops plant with a gentle stream of water to dislodge any thrips present on the surface. Pay close attention to the undersides of leaves and crevices where thrips can hide. After washing, use a soft cloth or sponge to wipe down the plant, removing any remaining thrips.

3. Neem Oil Spray

Neem oil is a natural insecticide derived from the neem tree. It is effective against a wide range of pests, including thrips. Mix neem oil with water according to the instructions on the product label and spray it onto your lithops plant, ensuring complete coverage. Repeat this process every 7-10 days until the thrips infestation is under control.

4. Biological Controls

Introducing natural predators of thrips, such as beneficial insects like ladybugs or predatory mites, can be an effective long-term solution. These beneficial insects feed on thrips and help control their population. Consult with a local garden center or nursery to determine the appropriate beneficial insects for your area and how to introduce them safely.

5. Systemic Insecticides

If the thrips infestation is severe and other methods have failed, you may consider using systemic insecticides. These are chemicals that are absorbed by the plant and kill pests when they feed on it. However, it is important to follow the instructions carefully and use these products sparingly, as they can also harm beneficial insects and other wildlife.

Conclusion

Thrips infestation can be detrimental to the health and appearance of your lithops plants. By taking preventive measures and promptly addressing any infestations, you can keep your plants thriving and free from thrips. Remember to regularly inspect your lithops for signs of damage, maintain good air circulation, and take appropriate action if necessary. With proper care, your lithops will continue to be a stunning addition to your succulent collection.