Updated: July 25, 2023

Thrips are pesky insects that can wreak havoc on your trailing ice plants. These tiny insects feed on the plant’s leaves and buds, causing damage and stunting growth. If left untreated, a thrip infestation can quickly spread to other plants in your garden. However, there are several effective methods for getting rid of thrips and keeping your trailing ice plant healthy and thriving.

Identify the Problem

Before you can effectively treat a thrip infestation, it’s essential to confirm that these insects are indeed the culprits. Thrips are tiny, slender insects measuring about 1-2 mm in length. They have long wings and come in various colors, including yellow, brown, or black. To identify thrips, carefully examine the leaves and buds of your trailing ice plant for tiny black dots or silver streaks. You may also notice distorted or discolored leaves as a result of thrip feeding.

Natural Remedies

If you prefer to take an organic approach to pest control, there are several natural remedies you can try to get rid of thrips in your trailing ice plant:

1. Neem Oil

Neem oil is a popular natural insecticide that disrupts the feeding and reproductive cycle of thrips. Mix one tablespoon of neem oil with one quart of water and spray it directly onto the affected areas of your trailing ice plant. Repeat this process every two weeks until the infestation is under control.

2. Insecticidal Soap

Insecticidal soaps work by suffocating thrips and other soft-bodied insects. Mix two tablespoons of insecticidal soap with one quart of water and spray it onto your trailing ice plant, focusing on the affected areas. Repeat this treatment every five days until the thrip population is reduced.

3. Reflective Mulch

Thrips are attracted to reflective surfaces, so placing reflective mulch around your trailing ice plant can deter them from landing and feeding. Aluminum foil or reflective plastic sheeting can be used as a mulch material. Cut it into small squares and scatter them around the base of the plant.

4. Beneficial Insects

Introducing beneficial insects, such as ladybugs or lacewings, into your garden can help control thrip populations naturally. These predatory insects feed on thrips and other garden pests. You can purchase them online or at a local garden center and release them in your garden.

Chemical Methods

If natural remedies fail to control the thrip infestation, you may need to resort to chemical methods. Keep in mind that chemical insecticides should be used as a last resort, as they can harm beneficial insects and pollinators. Always follow the instructions on the product label and wear protective clothing when applying chemicals. Here are a few chemical options for controlling thrips:

1. Systemic Insecticides

Systemic insecticides are absorbed by the plant and travel through its vascular system. Thrips that feed on treated plants will ingest the insecticide and die. These insecticides are available as granules or drenches and should be applied according to the manufacturer’s instructions.

2. Contact Insecticides

Contact insecticides work by directly killing thrips on contact. They are available in spray form and should be applied to all parts of the trailing ice plant, including the undersides of leaves where thrips often hide.

Prevention Tips

Preventing future thrip infestations is crucial for maintaining the health of your trailing ice plant. Here are some preventive measures you can take:

  1. Keep your plants healthy: Strong, healthy plants are more resistant to thrip infestations. Ensure your trailing ice plant is well-watered, properly fertilized, and receives adequate sunlight.

  2. Monitor your plants regularly: Regularly inspect your trailing ice plant for signs of thrips or other pests. Early detection can help prevent an infestation from spreading.

  3. Remove infested plants: If you notice severe thrip damage on a particular plant, it’s best to remove it from your garden. This will prevent the infestation from spreading to other plants.

  4. Practice good garden hygiene: Clean up fallen leaves and debris regularly, as thrips can hide in these areas during the winter months.

  5. Avoid over-fertilizing: Excessive nitrogen fertilization can make plants more attractive to thrips. Follow the recommended fertilization guidelines for your trailing ice plant.

Remember, prevention is always better than cure when it comes to thrips. By implementing these preventive measures and using effective control methods, you can keep your trailing ice plant healthy and free from thrip infestations.