How to Get Rid of Lerps on Ice Plant

Ice plant, also known as Delosperma, is a popular ground cover plant that is loved for its vibrant flowers and ability to thrive in hot and dry conditions. However, one common problem that ice plant owners face is the presence of lerps. Lerps are small, white, waxy structures that are often found on the leaves of ice plants. They not only detract from the plant’s appearance but can also cause damage if left untreated. In this article, we will explore how to get rid of lerps on ice plant effectively.

Understanding Lerps

Before we dive into the methods of eliminating lerps, it is important to understand what they are and how they affect ice plants. Lerps are secretions produced by insects known as lerp psyllids. These insects feed on the sap of ice plants, causing damage to the foliage. The lerps themselves act as a protective shield for the psyllids, making it difficult to directly eliminate the insects without removing the lerps first.

Manual Removal

The most straightforward method of getting rid of lerps is through manual removal. Start by wearing a pair of gloves and gently scrape off the lerps using your fingers or a soft brush. Be careful not to damage the leaves or stems while doing this. Once the lerps are removed, it becomes easier to target the underlying insects using other methods.

Water Spraying

Water spraying is another effective way to remove lerps from ice plants. Fill a spray bottle with clean water and add a few drops of mild dish soap. Shake well to create a soapy solution. Spray this solution directly onto the lerps, ensuring that all affected areas are covered. The soap helps to break down the protective wax coating and makes it easier to remove the lerps. After spraying, use a soft brush or your fingers to gently rub off the lerps from the plant.

Neem Oil Treatment

Neem oil, derived from the neem tree, is a natural insecticide that can be used to control lerp psyllids on ice plants. Mix one ounce of neem oil with one gallon of water in a sprayer. Shake well to emulsify the mixture. Spray this solution onto the infected ice plant, making sure to cover both sides of the leaves thoroughly. The neem oil will suffocate the psyllids and prevent them from causing further damage. Repeat this treatment every two weeks until the infestation is under control.

Horticultural Oil

Horticultural oil, also known as dormant oil, is another effective option for eliminating lerps on ice plants. It works by smothering the insects and disrupting their life cycle. Dilute the horticultural oil according to the manufacturer’s instructions and spray it onto the affected plant. Ensure that all parts of the ice plant are covered, including the undersides of leaves and stems. Repeat this treatment every two weeks until the infestation is eradicated.

Beneficial Insects

Introducing beneficial insects into your garden can help control lerp psyllids naturally. Ladybugs and lacewings are two examples of beneficial insects that feed on psyllids and other harmful pests. You can attract these insects to your garden by planting nectar-rich flowers such as marigolds, zinnias, and daisies. Alternatively, you can purchase beneficial insects from a reputable supplier and release them onto your ice plants.

Pruning Infested Branches

If the lerp infestation is severe or persistent, it may be necessary to prune away heavily infested branches. Use clean pruning shears to remove affected stems and leaves, making sure to dispose of them properly so as not to spread the infestation to other plants. Pruning not only removes the lerps but also encourages new growth and helps the plant recover from the damage caused by the psyllids.

Prevention is Key

Preventing lerp infestations in the first place is always preferable to dealing with them after they occur. Regularly inspect your ice plants for any signs of lerps or other pests. Avoid over-fertilizing, as excessive nitrogen can attract psyllids. Additionally, ensure that your ice plants are planted in well-draining soil and receive adequate sunlight and airflow, as healthy plants are less susceptible to infestations.

In conclusion, lerps on ice plants can be a nuisance, but with the right approach, they can be effectively eliminated. Manual removal, water spraying, neem oil treatment, horticultural oil, beneficial insects, and pruning are all viable methods for getting rid of lerps. Remember to prioritize prevention by maintaining healthy plants and regularly monitoring for any signs of infestation. With proper care and attention, your ice plants can thrive lerp-free and showcase their vibrant beauty.