Updated: June 5, 2022

Dumb Cane, also known as Dieffenbachia, is a popular houseplant known for its attractive foliage and easy care. However, many plant owners may notice small bugs crawling on their Dumb Cane plants. These bugs are known as scale insects, and they can be a common pest problem for Dumb Cane plants.

What Are Scale Insects?

Scale insects are small, oval-shaped bugs that attach themselves to the stems and undersides of leaves of plants. They are usually brown or black in color, and they feed on the plant’s sap. Scale insects can cause significant damage to plants if left untreated, as they can weaken the plant and make it more susceptible to other diseases.

How Do Scale Insects Affect Dumb Cane Plants?

Scale insects attach themselves to Dumb Cane plants and feed on their sap. This can cause the leaves to yellow and wilt, and the plant may become weak and stunted. Additionally, scale insects can spread diseases from one plant to another, so it’s essential to take action if you notice them on your Dumb Cane plant.

How Can I Get Rid of Scale Insects on My Dumb Cane Plant?

There are several methods for getting rid of scale insects on your Dumb Cane plant. Here are a few options:

  • Manual removal: If you only have a few scale insects on your plant, you can try removing them manually with a cotton swab dipped in rubbing alcohol. This will kill the bugs without harming the plant.
  • Insecticidal soap: Insecticidal soap is a safe and effective way to get rid of scale insects on your Dumb Cane plant. Simply spray the plant with the soap solution, making sure to cover all areas where the bugs are present.
  • Neem oil: Neem oil is another natural remedy for scale insects. It works by suffocating the bugs and preventing them from reproducing. Mix the neem oil with water according to the package instructions and spray the plant thoroughly.

How Can I Prevent Scale Insects from Attacking My Dumb Cane Plant?

Preventing scale insects from attacking your Dumb Cane plant is the best way to avoid a pest problem. Here are a few tips for preventing scale insects:

  • Inspect new plants: Before bringing a new plant into your home, inspect it carefully for signs of pests. If you notice any bugs, quarantine the plant and treat it before introducing it to your other plants.
  • Keep plants healthy: Healthy plants are less susceptible to pests and diseases, so make sure your Dumb Cane plant is getting enough light, water, and nutrients.
  • Clean leaves regularly: Wiping down your plant’s leaves regularly with a damp cloth can help prevent pest infestations.
  • Use insecticidal soap: Using insecticidal soap on a regular basis can help prevent scale insects from attacking your Dumb Cane plant.


Are scale insects harmful to humans?

No, scale insects are not harmful to humans. However, they can cause significant damage to your plants if left untreated.

Can I use pesticides to get rid of scale insects on my Dumb Cane plant?

While pesticides can be effective at getting rid of scale insects, they can also harm beneficial insects and other wildlife in your home. We recommend using natural remedies like insecticidal soap or neem oil first.

Can I still eat my Dumb Cane plant if it has had a scale insect infestation?

No, we do not recommend eating any part of a plant that has had a pest infestation.