Updated: April 16, 2023

Green onions are a popular addition to many dishes, but they can be difficult to grow due to pests like slaters. Slaters, also known as pill bugs or rolly pollys, are small crustaceans that can cause significant damage to the leaves and roots of green onion plants. In this article, we will discuss how to get rid of slaters on green onion plants.

Identifying Slaters

Before we dive into how to get rid of slaters on green onion plants, it’s essential to identify them correctly. Slaters are small, grayish-brown crustaceans with a segmented body and seven pairs of legs. They are commonly found in damp areas and can roll up into a ball when threatened. They are often mistaken for insects, but they are more closely related to shrimp and crabs.

Why Slaters Are a Problem for Green Onion Plants

Slaters can cause significant damage to green onion plants by feeding on the leaves and roots. They can chew through the tender leaves of young plants, causing holes and even killing the plant. They can also feed on the roots, which can stunt growth and make it difficult for the plant to absorb nutrients from the soil.

How to Get Rid of Slaters on Green Onion Plants

There are several methods for getting rid of slaters on green onion plants. Here are some effective ways:

1. Remove Hiding Places

Slaters love damp and dark areas, so removing any hiding places around your green onion plants can help reduce their numbers. This means removing any piles of debris or mulch around the base of the plant and ensuring that there is proper drainage in the soil.

2. Use Traps

Traps are an effective way to catch slaters and remove them from your green onion plants. You can create traps using rolled-up newspaper or cardboard, moistened with water. Slaters will be attracted to the moisture and will crawl inside the trap, making it easy to dispose of them.

3. Apply Diatomaceous Earth

Diatomaceous earth is a natural substance that contains the fossilized remains of tiny aquatic organisms called diatoms. It is an effective pest control method as it works by dehydrating the pests. Sprinkle a thin layer of diatomaceous earth around the base of your green onion plants, making sure to cover any hiding places like cracks or crevices.

4. Use Natural Predators

Many natural predators feed on slaters, including birds, lizards, and spiders. Encouraging these predators in your garden can help reduce the number of slaters on your green onion plants. You can also introduce nematodes, which are microscopic worms that feed on slaters and other pests.

5. Use Chemical Pesticides

If all else fails, you can use chemical pesticides to get rid of slaters on your green onion plants. However, it’s important to use them sparingly and only when necessary. Chemical pesticides can be harmful to other beneficial insects and pollinators, so use them with caution.

FAQ

Are slaters harmful to humans?

No, slaters are not harmful to humans. They do not bite or sting, and they are not known to transmit any diseases.

Can I eat green onions that have been treated with pesticides?

It’s best to avoid eating green onions that have been treated with pesticides. If you must use pesticides, make sure to follow the instructions carefully and wait at least a few days before consuming the onions.

Can I prevent slaters from coming back?

Yes, you can prevent slaters from coming back by removing hiding places, using traps, and encouraging natural predators. Regularly checking your green onion plants for signs of infestation can also help you catch any problems early on.

In conclusion, slaters can be a significant problem for green onion plants, but there are several effective ways to get rid of them. By removing hiding places, using traps, applying diatomaceous earth, using natural predators, and using chemical pesticides sparingly, you can keep your green onion plants healthy and pest-free.