Wednesday, May 22, 2024

Complete Guide on How to Get Rid of Thrips on Plants Effectively: Indoors & Outdoors – Insights Success


Have you ever marveled at your lush garden or cherished houseplants only to find tiny, bothersome pests wreaking havoc on their leaves and flowers? Cue the pesky thrips! These minuscule insects might seem harmless due to their size, but their impact on your plants can be disastrous.

Thrips, those stealthy garden invaders, are notorious for causing damage by piercing and sucking the vital juices from your beloved greens. But fear not! This comprehensive guide unveils effective strategies to bid farewell to these unwelcome guests and reclaim the vibrancy of your garden oasis.

What Are Thrips?

Thrips belong to an order of insects called Thysanoptera, boasting more than 6,000 species. However, only a handful of these species cause harm to plants. They are typically named after their preferred host plant, such as onion thrips, pea thrips, gladiolus thrips, or rose thrips.

Thrips are tiny, cigar-shaped insects, reaching just 1/25-inch long. They are brown, black, or yellow, some even sport colored markings. Despite having narrow, fringed wings, they are poor fliers. Nymphs, in the adolescent stage, look similar to adults but are smaller and wingless.

What Causes Thrips Infestation?

Thrips infestations can occur due to various factors. They are attracted to bright colors, particularly light, yellow, and white blossoms. Some plants, such as beans, squash, onions, carrots, roses, and gladioli, are more susceptible to thrip damage than others.

Thrips can also be introduced to your garden through infested weed seeds plants or by hitching a ride on cut flowers or vegetables brought in from outside. Additionally, thrips thrive in warm and dry conditions, making them more problematic in certain regions.

Signs of a Thrip Infestation

Identifying a thrip infestation early on is crucial for effective control. However, thrips are tiny and can be difficult to spot with the naked eye. Here are some signs to look out for:

  • Leaf damage: Thrips scrape at leaves, causing them to develop yellow speckles, become silvery, or show streaks and spots.
  • Distorted flowers: Thrips often target flowers, causing them to become deformed, discolored, or fail to open properly.
  • Black spots and excrement: Thrips leave behind dark spots, often referred to as “thrip poop,” on leaves and flowers.
  • Insects on leaves or flowers: Thrips can be observed crawling on the undersides of leaves or hiding inside flowers.
  • Stunted growth: Severe thrip infestations can lead to stunted growth in plants, with damaged shoots and leaves.

If you suspect a thrip infestation, you can perform a simple test by shaking the plant over a white sheet of paper. The thrips will fall off the plant and onto the paper, where you can observe them more easily.

Natural Methods To Get Rid of Thrips

If you prefer to use natural methods to control thrips on your plants, there are several effective options available. These methods are safe for the environment and help maintain the overall health of your garden. Here are some natural ways to get rid of thrips:

Introduce Beneficial Insects

Beneficial insects, such as ladybugs, lacewings, and predatory mites, can help control thrip populations.

These insects feed on thrips and their larvae, reducing the infestation. You can purchase beneficial insects from garden centers or seed banks and release them in your garden.

Apply Neem Oil

Neem oil is a natural insecticide derived from the neem tree. It acts as a repellent, disrupts the feeding and reproductive activities of thrips, and ultimately kills them.

To use neem oil, dilute it according to the instructions on the product label and spray it directly onto the affected plants. Repeat the application every 7 to 10 days until the thrips infestation is under control.

Use Insecticidal Soap

Insecticidal soap is a safe and effective method to eliminate thrips. It works by suffocating the insects and disrupting their cell membranes.

You can purchase insecticidal soap from gardening stores or seed banks or make your own by mixing mild liquid soap (such as Castile or Ivory) with water. Apply the solution to the affected plants, ensuring thorough coverage of all plant surfaces.

Employ Sticky Traps

Sticky traps are a simple yet effective method to monitor and control thrips. These traps consist of brightly colored sticky surfaces that attract thrips. Place the traps near the affected plants, and the thrips will get stuck on the adhesive surface. Regularly check and replace the traps as needed.

Prune and Dispose of Infested Plant Parts

If you notice severe infestations on specific plant parts, such as leaves or flowers, pruning and disposing of these infested parts can help reduce the thrip population. Be sure to properly dispose of the pruned plant material to prevent the thrips from spreading to other plants.

Chemical Methods To Get Rid of Thrips

In some cases, natural methods may not be sufficient to control a severe thrip infestation. Chemical methods can provide more immediate and targeted results.

However, it’s important to use these methods judiciously and follow all safety precautions. Here are some chemical options to consider:


Insecticides specifically formulated to target thrips can be an effective solution. Look for insecticides that contain active ingredients such as spinosad, pyrethrin, or imidacloprid. Follow the instructions on the product label for proper application and safety precautions.

It’s important to note that repeated use of insecticides can lead to thrips developing resistance, so it’s best to rotate between different active ingredients.

Systemic Insecticides

Systemic insecticides are absorbed by the weed strains and transported throughout their tissues, making them effective against thrips that feed on the plant sap.

These insecticides can be applied as soil drenches or foliar sprays. Be sure to read and follow the product label instructions carefully, as systemic insecticides may have specific application guidelines.

Horticultural Oils

Horticultural oils, such as mineral oil or petroleum-based oils, can be used to smother and suffocate thrips. 

These oils work by coating the insects’ bodies, preventing them from breathing and eventually leading to their death. Apply the oil according to the product instructions, ensuring thorough coverage of the plants.

It’s important to exercise caution when using chemical methods and always follow the manufacturer’s instructions. Avoid applying insecticides during peak pollination times to protect beneficial insects.

How To Get Rid of Thrips: FAQs

We’ll answer some frequently asked questions on how to get rid of thrips in plants.

What Is the Quickest Way to Get Rid of Thrips?

The quickest way to get rid of thrips is by using chemical insecticides specifically formulated for thrip control. However, it’s important to use them judiciously and follow all safety precautions.

What Causes Thrips Infestation?

Thrips infestations can occur due to various factors, including the introduction of infested plants, poor garden hygiene, overcrowding of plants, and the presence of weeds or debris that provide breeding grounds for thrips.

What Attracts Thrips To Plants?

Thrips are attracted to marijuana seeds plants with light, yellow, and white blossoms. They are also attracted to plants with tender new growth and plants that provide shelter and hiding spots.

Does Dawn Kill Thrips?

While Dawn dish soap can be used as a contact insecticide to kill thrips, it may not be as effective as specialized insecticidal soaps or other control methods. It’s best to use products specifically formulated for thrip control.

How To Get Rid of Thrips: Final Word

Thrips can be a persistent and damaging pest for your plants, but with the right knowledge and control methods, you can effectively manage and prevent infestations.

Remember to practice good garden hygiene, monitor new plants, and take preventive measures to minimize the risk of future thrip infestations. With proper care and vigilance, you can protect your plants and keep them thriving.

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