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How to Get Rid of Armyworms

Lowe's Editorial Team

By Lowe's Editorial Team
Published October 30, 2024

You often face the unpleasant challenge of infestations that can destroy your lawn and crops. Among these pests, armyworms are quite harmful causing significant damage. In this article we will explore how to get rid of armyworms.

What Are Armyworms

Armyworms are the larvae of moths that belong to the genus Spodoptera. These caterpillars get their name from their behavior of moving across fields in large numbers. They are typically green, brown or black in color. They can be easily identified by the stripes running down the length of their bodies. They feed on the underside of the leaves. As they mature their consumption increases to entire leaves and gradually consumes parts of the crop. It significantly damages potential yield or total crop destruction.

Identifying The Armyworms

Spotting armyworms early is very important because once they start feeding, they can kill large number of plants. They can turn a healthy green lawn into patches of brown and dead grass.

Identifying armyworms isn’t too tough if you know how to look for them. These pests have a unique way of eating that leaves behind certain signs. You can spot uneven or patchy areas where they have eaten the leaves and grass. You might also see areas of your garden or fields where grass has turned brown and died because of their feeding. Another giveaway is spotting the armyworms themselves. They can be found hanging on the plants that they have been eating or in the soil just beneath them. By keeping an eye out for these clues you can catch them before they do too much damage. Once you know you have got armyworms you can start figuring out how to get rid of armyworms to save your plants.

How To Get Rid Of Armyworms

To know how to get rid of armyworms you can follow a few treatments below for the best results:

Armyworm Killer:

This is a chemical solution made specifically to target and kill armyworms. Using this solution ensures that there is no future growth of these armyworms over your plants or lawn. While using it is important to read the product’s label carefully. Labels provide essential details about quantity, place and time of usage. Some situations may call for multiple applications of the armyworm killer. This could be due to a heavy infestation where armyworms have multiplied across a large area. In some cases, they might hatch eggs. Sequential treatments are sometimes necessary to completely eradicate these pests from your garden or lawn. Always follow the recommended waiting period between treatments to avoid overuse of chemicals and potential damage to your plants.

Natural Predators:

Encourage birds and insects in your garden. Birds love to eat caterpillars, including armyworms. Certain insects like ladybugs and wasps can help control their population too. Putting up bird feeders or birdhouses might help keep more birds in your yard.

Bacillus thuringensis (Bt):

This is a natural bacterium that you spray on plants. It is safe for humans and pets but poisonous to caterpillars like armyworms. Once they eat leaves treated with it, they stop eating and eventually die.

Remember whatever method you choose, early detection and quick action are key to successfully getting rid of armyworms.

Preventing Armyworm Infestations

To prevent armyworm infestations from taking hold, consider these strategies:

Regularly inspect your plants:

The earlier you can spot potential armyworm activity the easier it is to prevent the damage. Look out for chewed leaves, tiny eggs on the underside of leaves and the caterpillar themselves. You can inspect early morning or late evenings as armyworms are more active at those times.

Maintain a clean garden:

Keeping your garden free from debris and weeds reduces the number of places armyworms can hide and breed. Regularly remove old plant material and keep the area around your plants tidy.

Use a healthy lawn care routine:

A healthy and well-maintained lawn is less likely to attract armyworms. This includes proper fertilization, regular mowing to the appropriate height and adequate watering. Stresses and weak plants are more vulnerable to infestations.

Install a barrier:

For smaller garden plots physical barriers can deter armyworms moths from laying eggs. Netting or floating row covers placed over plants can be effective especially if you secure the edges to the ground.

Apply armyworm killer as prevention:

If you have had armyworm problems in the past or if they are common in your area apply an armyworm killer before you notice damage. Choose a product designed for preventive use and follow the label’s instructions closely for timing and application rates. This preemptive strike can stop an infestation before it starts.

Taking these preventive actions can significantly lower the chances of an armyworm invasion that can protect your garden and lawn from potential damage.

FAQ’s

What kills armyworms?

Various methods can be used to eradicate armyworms including chemical pesticides specifically labeled for these pests and biological methods like introducing predators or Bt.

Will vinegar kill armyworms?

There is some anecdotal evidence suggesting that will vinegar kill armyworms when applied directly. However, this might not be the most effective or practical solution, especially for large infestations.

Knowing how to get rid of armyworms involves a combination of early detection and the use of an effective armyworm killer, natural predators and preventive measures. By staying vigilant and responding quickly to signs of an infestation you can protect your garden or crops from these destructive pests.