Updated: July 2, 2023

Introduction

Tomatillos are a popular fruit in Mexican cuisine, known for their tangy flavor and versatility in various dishes. However, like any other plant, tomatillo plants can suffer from pest infestations. One common pest that affects tomatillo plants is scales. Scales are small insects that attach themselves to the leaves, stems, and fruits of plants, sucking sap and causing damage. In this article, we will discuss how to identify scales on tomatillo plants and provide effective methods to get rid of them.

Identifying Scales on Tomatillo Plants

Scales are tiny insects that measure only a few millimeters in length. They have a hard outer shell, resembling small bumps or scales on the plant’s surface. These pests can be black, brown, or even yellowish in color, depending on the species. When scales infest a tomatillo plant, they typically cluster together on the undersides of leaves or along the stems. Over time, their feeding behavior causes yellowing of leaves, stunted growth, and overall weakening of the plant.

Prevention is Key

The best way to deal with scales on your tomatillo plant is through preventive measures. By implementing these practices, you can reduce the risk of scale infestation:

  1. Inspect Plants Regularly: Regularly inspect your tomatillo plants for signs of scales or any other pests. Early detection allows for proactive treatment and prevents further spread.

  2. Avoid Overfertilization: Excessive fertilization can attract scales and other pests. Use balanced fertilizers at recommended rates to maintain plant health without encouraging scale infestation.

  3. Remove Infested Plant Material: If you notice any leaves or branches heavily infested with scales, promptly remove and destroy them. This prevents the scales from spreading to healthier parts of the plant.

  4. Encourage Natural Predators: Beneficial insects like ladybugs and lacewings are natural predators of scales. Attract these insects to your garden by planting flowering plants or using insectary plants as companion plants for your tomatillo.

Organic Control Methods

If preventive measures fail and scales infest your tomatillo plants, there are several organic control methods you can use to get rid of them:

1. Manual Removal

One effective way to eliminate scales is by manually removing them from the plant. To do this, use a soft brush or sponge soaked in soapy water to gently scrub the scales off the leaves, stems, and fruits. This method is best suited for smaller infestations and requires patience and consistency to ensure all scales are removed.

2. Horticultural Oils

Horticultural oils, such as neem oil or insecticidal soap, can be used to control scales on tomatillo plants. These oils suffocate the pests by blocking their breathing pores. Mix the oil with water according to the manufacturer’s instructions and spray it onto the affected parts of the plant. Repeat applications may be necessary for complete control.

3. Natural Insecticides

Certain natural insecticides, such as pyrethrin-based products, can be effective against scales. These insecticides are derived from chrysanthemum flowers and have low toxicity to humans and beneficial insects when used as directed. Always read and follow the instructions on the product label before applying any insecticide to your tomatillo plants.

4. Biological Control

Introducing beneficial insects that prey on scales can be a sustainable solution for scale management. Parasitic wasps, such as Encarsia formosa, lay their eggs inside scale insects, which eventually kill them. These beneficial wasps are commercially available and can be released onto your tomatillo plants following the instructions provided by the supplier.

5. Companion Planting

Companion planting involves growing plants that deter or repel pests near your tomatillo plants. Marigolds, for example, emit a scent that repels scales and other insects. Planting marigolds in close proximity to your tomatillo plants can help reduce the likelihood of scale infestation.

Conclusion

Scales can be a troublesome pest for tomatillo plants, but with proper identification and timely action, you can effectively manage and eliminate them. Remember to implement preventive measures, regularly inspect your plants, and use organic control methods if necessary. By following these steps, you can ensure healthy tomatillo plants that produce an abundance of delicious fruits for your culinary creations.