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How to Get Rid of Thrips in Corn Plant

Updated: December 27, 2022

Corn plants are a popular choice for indoor gardeners due to their ability to thrive in low light conditions, but they are also susceptible to a variety of pests, including thrips. These tiny insects can wreak havoc on your corn plant, causing damage to the leaves and reducing the plant’s overall health. Fortunately, there are several methods you can use to get rid of thrips and keep your corn plant looking healthy and beautiful.

What are Thrips?

Thrips are tiny, winged insects that feed on the sap of plants. They are typically less than 1/16 inch in length and can vary in color from pale yellow to dark brown or black. Thrips reproduce quickly and can cause significant damage to plants if left untreated.

Signs of Thrips Infestation

If you suspect your corn plant has a thrip infestation, look for the following signs:

  • Discolored or distorted leaves
  • Silver streaks on the leaves
  • Black specks on the leaves (which are actually their feces)
  • Curling or wilting leaves
  • Stunted growth

If you notice any of these symptoms, it’s important to take action right away to prevent further damage.

How to Get Rid of Thrips in Corn Plant

  1. Wash the Plant with Soapy Water – One of the most effective ways to get rid of thrips is by washing your corn plant with soapy water. Mix a solution of one teaspoon of dish soap with one quart of water and use a spray bottle to apply it to the leaves. Be sure to cover both sides of the leaves thoroughly.

  2. Use Insecticidal Soap – Insecticidal soap is a specially formulated soap that is designed to kill insects on contact. It is safe for use on plants and can be an effective way to get rid of thrips. Follow the instructions carefully when using insecticidal soap, and be sure to apply it to both sides of the leaves.

  3. Apply Neem Oil – Neem oil is a natural insecticide that is derived from the neem tree. It works by disrupting the thrips’ feeding and reproductive processes, effectively killing them. Mix one tablespoon of neem oil with one quart of water and apply it to the leaves with a spray bottle.

  4. Use Sticky Traps – Sticky traps are an effective way to catch and kill thrips. They work by attracting the insects with a bright color and a sticky surface that they can’t escape from. Place the traps near your corn plant and dispose of them once they are covered in thrips.

  5. Remove Infected Leaves – If you notice that some leaves are severely infested, it’s best to remove them altogether. This will prevent the thrips from spreading to other parts of the plant.

How to Prevent Thrips Infestation

Preventing thrips infestation is always easier than dealing with it after the fact. Here are some preventative measures you can take:

  • Keep your plants healthy by providing them with adequate sunlight, water, and nutrients.
  • Keep your plants clean by regularly wiping down the leaves with a damp cloth.
  • Check new plants for thrips before bringing them home.
  • Keep your plants away from other infected plants.


Are thrips harmful to humans?

No, thrips are not harmful to humans.

Can I use chemical insecticides to get rid of thrips?

While chemical insecticides can be effective in getting rid of thrips, they can also harm beneficial insects and pollinators. It’s best to use natural methods whenever possible.

Can I use rubbing alcohol to get rid of thrips?

Rubbing alcohol can be effective in killing thrips on contact, but it can also damage your plant’s leaves. It’s best to use other methods, such as washing the plant with soapy water or using insecticidal soap.

In conclusion, thrips can be a major problem for corn plants, but there are several methods you can use to get rid of them. By following these tips, you can keep your corn plant healthy and free from thrips infestation. Remember to always check your plants regularly for signs of infestation so that you can take action quickly.