Live to Plant

How to Get Rid of Scales on Edamame Plant

Updated: December 21, 2022

Edamame plants are a type of soybean plant that is known for its delicious and nutritious beans. However, just like any other plant, edamame plants can be susceptible to pests and diseases. One of the most common pests that can attack edamame plants is the scale insect. These small, oval-shaped insects attach themselves to the stems and leaves of the plant and suck out the sap, causing damage to the plant. If left untreated, scales can cause stunted growth, yellowing of leaves, and even death of the plant. In this article, we will discuss how to get rid of scales on edamame plants.

Identify Scale Insects

Before you start treating your edamame plant for scales, it’s important to identify whether your plant is actually infested with them. Scale insects are small, usually about 1/8 inch long, and have a hard outer shell that protects their soft body underneath. They can be found on the stems and leaves of the plant and are often mistaken for tiny bumps or dots. If you look closely, you may see a tiny hole in the center of the scale where the insect is feeding.

Natural Remedies

If you have a small infestation of scales on your edamame plant, you may be able to get rid of them using natural remedies. Here are some options:

  • Neem Oil: Neem oil is a natural insecticide that can be effective in controlling scales. Mix one tablespoon of neem oil with one quart of water and spray the solution onto the affected areas of your edamame plant.
  • Dish Soap: Mix one tablespoon of dish soap with one quart of water and spray it onto your edamame plant. The soap will suffocate the scales and prevent them from feeding on your plant.
  • Alcohol: Dip a cotton swab in rubbing alcohol and dab it onto the scales. The alcohol will kill the insects on contact.

Chemical Treatments

If your edamame plant has a severe infestation of scales, you may need to use chemical treatments to get rid of them. Here are some options:

  • Systemic Insecticides: Systemic insecticides are absorbed by the plant and can kill scales that are feeding on it. Follow the instructions on the label carefully and apply the insecticide as directed.
  • Contact Insecticides: Contact insecticides kill scales on contact. They can be sprayed directly onto the affected areas of your edamame plant. Follow the instructions on the label carefully and wear protective gear while applying.

Preventing Future Infestations

Once you have successfully treated your edamame plant for scales, it’s important to take steps to prevent future infestations. Here are some tips:

  • Inspect Regularly: Check your edamame plant regularly for signs of scale insects or other pests.
  • Remove Infested Plant Material: If you notice any scales or other pests on your edamame plant, remove the affected areas immediately to prevent the infestation from spreading.
  • Maintain Healthy Plants: Keep your plants healthy by providing them with adequate water, sunlight, and nutrients. Healthy plants are less susceptible to pest infestations.


Can scale insects harm humans?

No, scale insects do not harm humans.

Can I eat edamame beans if my plant has had a scale infestation?

Yes, you can still eat edamame beans harvested from a plant that has had a scale infestation. However, it’s important to wash them thoroughly before consuming.

Can I use chemical treatments on my edamame plant if I plan to harvest the beans?

It’s important to follow the instructions on the label carefully when using chemical treatments on your edamame plant. Some insecticides may have a waiting period before the plant can be harvested, so it’s important to check the label before using.