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How to Get Rid of Spider Mites in Dahlia Plant

Updated: May 4, 2022

Dahlias are beautiful flowers that add a vibrant pop of color to any garden. However, spider mites can quickly turn your beautiful blooms into a nightmare. Spider mites are tiny pests that feed on the sap of plants, causing yellowing leaves, stunted growth, and even death. In this article, we will discuss how to get rid of spider mites in dahlia plants.

Identification of Spider Mites

Spider mites are difficult to see with the naked eye because they are so small – about the size of a pinhead. They are often identified by the damage they cause to plants. The leaves will develop tiny spots that eventually turn yellow and dry up. If you notice these symptoms on your Dahlia plant, it’s possible that spider mites are present.

Prevention of Spider Mites

The best way to deal with spider mites is to prevent them from infesting your plants in the first place. One way to do this is by maintaining a healthy garden environment. Spider mites thrive in hot, dry conditions, so be sure to water your dahlia plants regularly and maintain proper humidity levels.

Another way to prevent spider mites is by practicing good garden hygiene. Remove any dead or dying plant material and keep the area around your dahlias free of weeds. This will reduce the likelihood of spider mite infestations.

Treatment of Spider Mites

If you have already detected spider mites on your Dahlia plant, don’t fret. There are several ways to get rid of them. Here are some effective treatments:

1. Insecticidal Soap

Insecticidal soap is an effective treatment for spider mites. It works by suffocating the pests, causing them to die off. To use this treatment, mix one tablespoon of insecticidal soap with one quart of water and spray the solution directly onto the affected plant.

2. Neem Oil

Neem oil is a natural insecticide that is derived from the neem tree. It works by disrupting the feeding and reproductive capabilities of spider mites, eventually killing them off. To use this treatment, mix two tablespoons of neem oil with one gallon of water and spray the solution onto the affected plant.

3. Essential Oils

Essential oils like peppermint, rosemary, and clove are effective in repelling spider mites. To use this treatment, mix a few drops of essential oil with water and spray the solution onto the affected plant.


Spider mites can be a frustrating pest to deal with, but with proper prevention and treatment, you can keep your Dahlia plants healthy and thriving. Remember to maintain a healthy garden environment and practice good garden hygiene to prevent spider mite infestations. If you do detect spider mites on your Dahlia plant, try using insecticidal soap, neem oil, or essential oils to get rid of them.


How do I prevent spider mites in my garden?

  • Maintain proper humidity levels
  • Water your plants regularly
  • Practice good garden hygiene by removing dead or dying plant material and weeds

Are spider mites harmful to humans?

No, spider mites are not harmful to humans.

Can I use chemical pesticides to get rid of spider mites?

Yes, chemical pesticides can be effective in getting rid of spider mites. However, they can also harm beneficial insects and pollinators in your garden. It’s best to try natural remedies first before resorting to chemical pesticides.