Updated: October 22, 2022

Thrips are tiny insects that can cause damage to citrus plants by sucking sap, which results in stunted growth, yellowing leaves, and deformed fruits. They also transmit diseases that can further harm your plants. If you have a citrus plant and suspect it has thrips, it’s essential to take action to get rid of them. In this article, we’ll discuss how to identify and eliminate thrips from your citrus plants.

Identifying Thrips

Thrips are tiny insects that measure between 1-2mm long, making them challenging to spot with the naked eye. They have slender bodies with narrow wings, and they range in color from pale yellow to dark brown or black. They typically feed on the undersides of leaves or on young fruit, causing damage to the plant.

To identify thrips infestation, inspect your citrus plant for the following signs:

  • Silver-white streaks on leaves
  • Curling or distorted leaves
  • Tiny black dots (thrips excrement) on leaves
  • Scarring on young fruit
  • Yellowing of leaves

If you notice any of these symptoms, you most likely have a thrip infestation.

Eliminating Thrips

Here are some effective measures to get rid of thrips in citrus plants:

1. Physical Removal

One way to get rid of thrips is by physically removing them from the plant. To do this, wash the plant with a strong stream of water, which will knock off the thrips from the plant. You can also use a soft-bristled brush or cloth to wipe the leaves gently.

2. Insecticidal Soap

Insecticidal soap is an effective way to control thrip infestation. It works by suffocating the insects by clogging their respiratory pores. You can make an insecticidal soap solution by mixing 1 tablespoon of dish soap with 1 quart of water. Apply the solution to your plant using a spray bottle, making sure to cover both sides of the leaves.

3. Neem Oil

Neem oil is a natural insecticide that can help eliminate thrips in citrus plants. It contains a compound called azadirachtin, which disrupts the life cycle of thrips and other pests. Mix neem oil with water according to the instructions on the package, and apply it to your plant using a spray bottle.

4. Chemical Insecticides

If all else fails, you can use chemical insecticides to get rid of thrips. However, be aware that these products can harm beneficial insects and pollinators, so use them sparingly and only as a last resort.

Preventing Thrips Infestation

The best way to deal with thrips is to prevent them from infesting your citrus plant in the first place. Here are some tips to keep your plants healthy and thrip-free:

  • Keep your citrus plant healthy by providing it with adequate light, water, and nutrients.
  • Inspect new plants carefully before bringing them home.
  • Keep weeds and debris away from your citrus plant, as they can harbor thrips.
  • Use yellow or blue sticky traps to catch adult thrips.
  • Apply beneficial nematodes to the soil around your plant, which can help control thrip larvae.

FAQ

Can thrips harm humans?

While thrips can bite humans, they do not pose any significant health risks.

Are there any natural predators of thrips?

Yes, there are several natural predators of thrips, including ladybugs, lacewings, and predatory mites.

Can I eat fruit from a citrus plant that has had a thrip infestation?

Yes, you can still eat fruit from a plant that has had a thrip infestation. However, damaged fruit may not be as tasty or nutritious as undamaged fruit.

Conclusion

Thrips can be a real headache for citrus growers, but with the right measures, you can eliminate them and keep your plants healthy. Remember to identify the signs of thrips infestation early and take action promptly. Additionally, focus on keeping your plants healthy and pest-free through proper care and prevention measures. With these steps, your citrus plants will thrive and produce delicious fruits for years to come.