Updated: July 21, 2023

Slaters on Tomato Plant

Slaters, also known as woodlice or pillbugs, are common pests that can cause damage to tomato plants, including Roma tomato plants. These small crustaceans feed on decaying organic matter and can often be found in damp, dark areas such as under pots or in mulch. While they may not directly harm the tomatoes themselves, they can nibble on the plant’s leaves and stems, leading to weakened growth and potential disease. If you’ve noticed slaters on your Roma tomato plants and want to get rid of them, here are some effective strategies to try.

1. Remove Attractive Habitats

One of the first steps in controlling slaters is to eliminate their preferred habitats. Slaters are attracted to moist environments with ample organic matter to feed on. Start by removing any debris or decaying plant material from around your tomato plants. This includes fallen leaves, dead grass, or excess mulch.

Additionally, make sure your garden has good drainage to prevent water from accumulating near the plants. This can be achieved by ensuring the soil is well-drained and adding organic matter such as compost to improve soil structure.

2. Provide Proper Ventilation

Slaters thrive in humid conditions, so it’s important to provide adequate ventilation for your tomato plants. Make sure there is enough space between plants to allow air circulation. Prune any dense foliage that may be blocking airflow.

Consider using a fan near your tomato plants to help improve ventilation further. The movement of air can deter slaters from settling and feeding on your plants.

3. Use Natural Predators

Introducing natural predators can be an effective way to control slater populations in your garden. Many animals feed on slaters, including birds, frogs, toads, and certain insects. Encourage these predators to visit your garden by providing suitable habitats and food sources.

Bird feeders and birdbaths can attract birds that will help keep slater populations in check. Creating a small pond or water feature will also attract frogs and toads, which are excellent natural predators of slaters.

4. Apply Diatomaceous Earth

Diatomaceous earth is a natural and safe product that can effectively control slaters. It works by dehydrating the pests upon contact, ultimately causing their demise. To use diatomaceous earth, sprinkle a thin layer around the base of your tomato plants and on any areas where slaters are commonly found.

Remember to reapply after rain or irrigation, as the effectiveness of diatomaceous earth diminishes when it gets wet. Be cautious not to inhale the dust when applying, as it can irritate your respiratory system.

5. Use Organic Slug and Snail Baits

Slug and snail baits that are labeled as organic can also be effective in controlling slaters. These baits contain iron phosphate, which is safe for humans, pets, and plants, but deadly to slaters.

Apply the bait in the evening or early morning when slaters are most active. Follow the instructions on the product label for proper application rates and frequency.

6. Handpick and Relocate

If you only have a small number of slaters on your tomato plants, handpicking them off can be an effective method of control. Wear gloves and manually remove the pests from the plant. Ensure you relocate them far away from your garden to avoid reinfestation.

7. Avoid Chemical Pesticides

While chemical pesticides may provide a quick solution to slater infestations, they can also harm beneficial insects and disrupt the natural balance of your garden ecosystem. Therefore, it is best to avoid using chemical pesticides unless absolutely necessary.

If you’ve tried all the above methods and are still struggling with slater infestations, consult with a local gardening expert or entomologist for further advice. They may be able to recommend additional strategies or provide insight into why slaters are persisting in your garden.

Remember, prevention is key when it comes to pest control. Regularly monitor your tomato plants for signs of slaters and take action as soon as you spot them. By implementing these strategies and maintaining a healthy garden environment, you can effectively manage slater populations and protect your Roma tomato plants.