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8 Ways to Get Rid of Armyworms

Armyworms are not actually worms but caterpillars that grow up to be 1.5–2 inches long. They get the name armyworms because, at the larval stage, they migrate to crop fields or lawns in huge packs. They can strip lawns, feasting on grass blades, leaves, and plants, leaving behind brown patches. They act fast, going through the entire lawn in days. So, it is important to deal with an armyworm infestation as quickly as possible.

8 Ways to Get Rid of Armyworms

Ways to get rid of armyworms
1. Recognize warning signs
It is crucial to be vigilant about garden pests as harmful as armyworms. So, one should inspect their lawn or garden frequently and pay attention to areas that seem to be thinning or browning—they could be infestation hotspots. Upon noticing such areas and signs like larval excreta and worm-like creatures on grass, one should act promptly. Recognizing an infestation early can help one prevent extensive damage to their lawn, as armyworms can quickly grow and lay eggs, causing widespread damage.

2. Use nematodes
Beneficial nematodes are microscopic, unsegmented worms that can feed on many garden pests, including armyworms. Using beneficial nematodes is one of the safest natural remedies to get rid of armyworms in lawns, as these microscopic organisms do not cause harm to humans, pets, and plants. They also do not affect beneficial worms like earthworms. Only armyworm larvae and other harmful soil-dwelling pests will be targeted with this method. One can find beneficial nematodes online or at a store and apply them strategically across the lawn or garden. They will catch armyworm larvae and feed on them, preventing further damage to the grass and plants.

3. Try Bacillus thuringiensis
Bacillus thuringiensis (Bt) is a biological pesticide, which when ingested by the caterpillars or insects, produces toxins to kill them. These toxins are not harmful to humans or pets, making Bt a great natural remedy for targeting armyworms. Bt comes in a wide range of products as either a liquid-based pesticide that can be sprayed or as pulverized dust that can be sprinkled on affected plants. The armyworm larvae feeding on these plants will inevitably ingest Bt and die.

4. Introduce armyworm predators to the lawn
Encouraging natural predators of armyworms like birds, beneficial wasps, and insects to thrive in the garden can help keep the grass and plants free from pests. One can consider installing birdhouses, providing the birds with sources of water, and choosing plants that attract beneficial organisms to create an ecosystem that can lower the risk of armyworm infestation. The birds and insects will feed on the worms and their larvae, preventing large-scale infestation. This method also supports environmental balance and eliminates the need to use chemicals for targeting pests. So, it keeps the garden naturally free from harmful parasites.

5. Use diatomaceous earth
Diatomaceous earth is a non-toxic solution to get rid of armyworms. It is a natural siliceous, fossilized powder that targets pests in the lawns by dehydrating their soft bodies. It is an environmentally friendly method that is also safe for pets, humans, and plants. It is only harmful for pests that come in contact with it.

6. Try soapy water
Insecticidal soap and water solution is a convenient and safe option for killing pests. The solution kills armyworms through dehydration. But, this method would work when one can actually see the armyworms in the lawn. One should collect the worms and drop them into a bucket of soap water, killing them quickly. Alternatively, one can use neem oil to target armyworms. All one has to do is mix neem oil with water and soap and spray the solution on affected areas. This can deter armyworms.

7. Maintain a healthy lawn
A well-maintained, healthy, and fertile lawn can itself keep pests like armyworms at bay. So, one should regularly mow the lawn to ensure the grass is not too long and not too short. Then, one should water the plants and grass regularly to ensure the soil remains moist but not excessively soggy. Also, using fertilizers to give plants and grass optimal nutrition also keeps the lawn healthy. These practices can make the lawn seem unappealing to armyworms, deterring them from targeting the grass and plants.

8. Consider chemical insecticides
When dealing with a severe armyworm infestation that cannot be dealt with using natural remedies like soapy water, beneficial nematodes, lawn care, and other options, chemical insecticides might be the only option. Many armyworm killers are available in stores, but one should be careful while using them. These products contain harsh chemicals that can harm plants, gardens, and pets. One should also choose chemical solutions specifically labeled and formulated for targeting armyworms.

If dealing with frequent and serious armyworm infestations, it is best to seek professional assistance. One can easily find local pest control companies and hire them to get rid of armyworms. Professionals can also recommend best practices to keep lawns free from such pests for a long period.

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