How to Get Rid of Lerps on Gopher Plant

Gopher plant (Euphorbia rigida) is a hardy, drought-resistant plant that is native to the southwestern United States. It is a popular landscaping plant due to its attractive blue-green foliage and yellow-green flowers. However, one problem that gardeners may encounter when growing gopher plant is the presence of lerps.

Lerps are small, white, waxy deposits that appear on the leaves of gopher plant. They are created by the nymphs of a small insect called the red gum lerp psyllid (Glycaspis brimblecombei). These insects feed on the sap of the plant and secrete a protective covering over themselves, which appears as the white, waxy deposits.

While lerps are not harmful to the plant itself, they can be unsightly and may attract other pests. Fortunately, there are several ways to get rid of lerps on gopher plant.

1. Prune Affected Leaves

One simple way to get rid of lerps on gopher plant is to prune affected leaves. Use clean, sharp pruning shears to remove any leaves that have visible lerps. This will not only remove the unsightly deposits but also remove any insects that may be hiding under them.

2. Use Insecticidal Soap

Another effective method for getting rid of lerps on gopher plant is to use insecticidal soap. Insecticidal soap is a natural, non-toxic product that is safe for use on plants. It works by breaking down the protective coating of the lerps and killing the insects underneath.

Apply insecticidal soap according to the manufacturer’s instructions, making sure to cover all affected leaves and stems thoroughly. Repeat applications may be necessary until all lerps are gone.

3. Introduce Natural Predators

Introducing natural predators, such as ladybugs or lacewings, can also help to get rid of lerps on gopher plant. These insects feed on the red gum lerp psyllid and can help to reduce their population.

To introduce natural predators, purchase them from a reputable supplier and release them near the affected plants. Repeat releases may be necessary until the lerps are under control.

4. Use Horticultural Oil

Horticultural oil is another effective option for getting rid of lerps on gopher plant. It works by suffocating the insects and breaking down the protective coating of the lerps.

Apply horticultural oil according to the manufacturer’s instructions, making sure to cover all affected leaves and stems thoroughly. Repeat applications may be necessary until all lerps are gone.

5. Practice Good Garden Maintenance

Good garden maintenance can also help to prevent the presence of lerps on gopher plant. Regularly inspect plants for signs of pests or diseases, and promptly remove any affected leaves or stems.

Additionally, make sure that gopher plant is planted in well-draining soil and that it receives adequate water and sunlight. Stressed plants are more susceptible to pests and diseases, including red gum lerp psyllids.

FAQ

Are lerps harmful to gopher plant?

While lerps are not harmful to gopher plant itself, they can be unsightly and may attract other pests.

Can I use chemical insecticides to get rid of lerps on gopher plant?

While chemical insecticides can be effective at getting rid of lerps on gopher plant, they may also harm beneficial insects and other wildlife in your garden. It is recommended to use natural methods first before resorting to chemical options.

How can I prevent the presence of lerps on gopher plant?

Practicing good garden maintenance, including regular inspections and proper watering, can help to prevent the presence of lerps on gopher plant. Additionally, introducing natural predators and using natural insecticides can help to control their population.