Live to Plant

How to Get Rid of Spider Mites in Dumb Cane Plant

Updated: March 23, 2022

Dumb Cane, also known as Dieffenbachia, is a popular houseplant that is loved for its beautiful foliage and easy care. However, like all plants, it is susceptible to pests and diseases. One of the most common pests that infest dumb cane plants is the spider mite. Spider mites are tiny arachnids that feed on the sap of plants, causing damage to leaves and eventually killing the plant if left untreated. In this article, we will discuss how to identify spider mites in dumb cane plants and how to get rid of them.

Identifying Spider Mites in Dumb Cane Plants

Spider mites are so small that they are almost invisible to the naked eye. They are usually found on the undersides of leaves, where they spin webs and lay their eggs. The first sign of a spider mite infestation is tiny yellow or white spots on the leaves of your dumb cane plant. As the infestation progresses, the spots will turn brown and the leaves will become dry and brittle. You may also notice webbing on the plant or small black dots, which are the mites themselves.

Getting Rid of Spider Mites in Dumb Cane Plants

The good news is that spider mites can be controlled with a little effort and patience. Here are some steps you can take to get rid of spider mites in your dumb cane plant:

Step 1: Isolate the Infected Plant

The first step is to isolate the infected plant from other plants in your home. This will prevent the spider mites from spreading to other plants.

Step 2: Wash the Plant

Wash the plant thoroughly with a gentle stream of water. This will help to dislodge any spider mites that are present on the leaves.

Step 3: Apply Insecticidal Soap

Insecticidal soap is a natural and effective way to control spider mites. It works by suffocating the mites and their eggs. Be sure to follow the instructions on the label carefully.

Step 4: Repeat Treatment

Repeat the insecticidal soap treatment every 7-10 days until the spider mites are completely gone. This will ensure that you catch any new hatchlings before they have a chance to mature and lay more eggs.

Step 5: Monitor the Plant

Continue to monitor your dumb cane plant for any signs of spider mites. If you notice any new infestations, repeat the treatment process.


Can I prevent spider mites from infesting my dumb cane plant?

Yes, you can prevent spider mites by keeping your dumb cane plant healthy and stress-free. Spider mites are attracted to plants that are weakened or stressed. Make sure your plant is getting enough water and light, and avoid exposing it to extreme temperatures.

What should I do if my dumb cane plant is severely infested with spider mites?

If your plant is severely infested with spider mites, it may be best to discard it and start fresh with a new plant. Severe infestations can be difficult to control and may require multiple treatments over an extended period of time.

Are there any natural remedies for spider mites?

Yes, there are several natural remedies that can be used to control spider mites. These include neem oil, garlic spray, and rubbing alcohol. However, it is important to note that natural remedies may not be as effective as synthetic insecticides and may require more frequent application.


Spider mites can be a pesky problem for dumb cane plant owners, but with a little effort and patience, they can be controlled. Remember to isolate the infected plant, wash it thoroughly, apply insecticidal soap, and repeat treatment every 7-10 days. By following these steps and monitoring your plant for any new infestations, you can keep your dumb cane plant healthy and spider mite-free.