Armyworms are a type of caterpillar from the noctuid moth family, and they can be quite a nuisance to lawns in Holly Springs, NC and throughout our area. They're named for their tendency to move in large groups, much like an army, and they can quickly devastate a lawn by feeding on grass.
Identification:
- Appearance: Armyworms are usually green or brown with stripes running down their bodies. They can range in color and size, but they are often around 1 to 1.5 inches long when fully grown.
- Damage: They cause noticeable damage by eating the grass blades, which can leave your lawn looking ragged and sparse. The damage often appears as irregular patches or streaks of dead grass.
Treatment:
- Monitor and Identify:
- Regular Inspection: Check your lawn frequently, especially if you notice areas of thinning grass. Look for caterpillars or their droppings.
- Threshold Levels: If you see more than 2-3 caterpillars per square foot, it’s time to take action.
- Cultural Controls:
- Maintain Lawn Health: A healthy, well-maintained lawn is better able to withstand and recover from pest damage. Regular mowing, proper fertilization, and adequate watering can help.
- Remove Debris: Keep your lawn free of debris and thatch, as these can provide a habitat for armyworms.
- Physical Controls:
- Hand-Picking: For small infestations, you might be able to pick the caterpillars off by hand or use a broom to sweep them away.
- Watering: A strong jet of water from a hose can dislodge the caterpillars, especially if you do it early in the morning or late in the evening when they are less active.
- Biological Controls:
- Beneficial Nematodes: These microscopic worms are natural predators of armyworm larvae. They can be applied to the soil to help control caterpillar populations.
- Bacillus thuringiensis (Bt): This is a bacterium that targets caterpillars and can be effective if applied early in the infestation.
- Chemical Controls:
- Insecticides: There are several insecticides available that can be effective against armyworms. Look for products containing ingredients like pyrethroids or spinosad. A professional insecticide we recommend is Bifenthrin, or Talspar P. Always follow the manufacturer’s instructions carefully and consider the potential impact on beneficial insects and the environment.
- Preventive Measures:
- Monitor Nearby Areas: If you have neighboring properties with large grass areas, keep an eye on them as well, since armyworms can migrate from one area to another.
- Seasonal Timing: Armyworm infestations are often more common in late summer or early fall (Aug-Sept), so be extra vigilant during these times and take necessary precautions to prevent infestations.
By combining these methods, you can effectively manage and treat armyworm infestations and keep your lawn looking its best. If you would like to sign up for our insect control services in Holly Springs and Fuquay Varina, NC please contact us today to get started! https://wakelandscapes.com/contact