Updated: May 19, 2022

Creeping Jenny, also known as Lysimachia nummularia, is a popular ground cover plant that is known for its bright yellow-green foliage. However, like many other plants, creeping jenny is susceptible to pests and diseases. One of the most common problems that gardeners face with this plant is scale infestation. Scales are tiny insects that attach themselves to the stems and leaves of the plant, sucking out the sap and causing damage. In this article, we will explore some effective ways to get rid of scales on creeping jenny plant.

Identify the Scale Infestation

The first step in getting rid of scales on creeping jenny plant is to identify the infestation. Look for small, round bumps on the stems and leaves of the plant. These bumps are usually brown or black in color and can be scraped off with a fingernail. If you see these bumps, it’s likely that your creeping jenny plant has a scale infestation.

Remove Scales Manually

One way to get rid of scales on creeping jenny plant is to remove them manually using a soft-bristled brush or cotton swab dipped in rubbing alcohol. Gently scrub the scales off the plant, being careful not to damage the foliage. Repeat this process every few days until all the scales have been removed.

Use Horticultural Oil

Horticultural oil is another effective way to get rid of scales on creeping jenny plant. These oils work by suffocating the insects and preventing them from breathing. To use horticultural oil, dilute it according to the instructions on the bottle and spray it on the affected areas of the plant. Be sure to cover both sides of the leaves and stems. Repeat this process every two weeks until all the scales have been eliminated.

Introduce Beneficial Insects

Another way to get rid of scales on creeping jenny plant is to introduce beneficial insects such as ladybugs or lacewings. These insects are natural predators of scales and will eat the insects, helping to control the infestation. You can purchase these insects at your local nursery or online.

Keep the Plant Healthy

Keeping the creeping jenny plant healthy is also important in preventing scale infestations. Make sure the plant is well-watered and fertilized regularly with a balanced fertilizer. Also, avoid over-fertilizing, as this can attract pests to the plant. Prune the plant regularly to remove any dead or damaged foliage and improve air circulation around the plant.


Scales can be a frustrating pest for gardeners, but with these effective methods, you can get rid of them on your creeping jenny plant. Remember to identify the infestation, remove scales manually or use horticultural oil, introduce beneficial insects, and keep the plant healthy. By following these steps, you can keep your creeping jenny plant looking beautiful and healthy.


Can scales harm other plants in my garden?

Yes, scales can spread to other plants in your garden if left untreated.

How often should I spray horticultural oil on my creeping jenny plant?

You should spray horticultural oil every two weeks until all scales have been eliminated.

Can I use neem oil instead of horticultural oil?

Yes, neem oil is also effective in controlling scale infestations on creeping jenny plants.

What should I do if my creeping jenny plant is severely infested with scales?

If your plant is severely infested with scales, it may be best to remove it and start with a new one to prevent the spread of the infestation.