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You mowed your lawn a few days ago, and everything looked healthy.
Now, you’re staring at large brown patches that seem to have appeared overnight.
If this sounds familiar, you may not be dealing with drought or lawn disease—you could have an armyworm infestation.
Armyworms are one of the fastest-moving lawn pests homeowners encounter. Left untreated, they can strip a healthy lawn in just a matter of days.
The good news? If you catch them early and use the right products, you can stop the damage before it spreads.
Armyworms get their name because they move across lawns in large numbers, feeding together like an army.
The caterpillars feed aggressively on grass blades, often at night or during the cooler parts of the day. By the time homeowners notice the damage, the infestation may have already been active for several days.
Because they feed so quickly, it often feels like your lawn was healthy one day—and dying the next.
Armyworm damage is commonly mistaken for drought stress or lawn fungus.
Here’s how to tell the difference.
Fungal diseases often produce:
Armyworm damage, on the other hand, looks more like the lawn has been mowed far too short or stripped of its blades.
A drought-stressed lawn usually responds to watering.
Armyworm damage doesn’t.
If your lawn continues getting worse despite adequate watering, insects may be the real culprit.
Armyworms don’t slow down once they start feeding.
An infestation can spread rapidly across an entire yard, leaving extensive damage behind.
The sooner you treat the problem, the better your chances of saving healthy turf before additional areas are affected.
Waiting even a few extra days can mean more repairs, reseeding, and recovery later.
Granular insecticides are an excellent choice when you want simple application and even coverage across larger areas.
Dylox 6.2 Granular provides fast control of damaging lawn insects and is an excellent option for when armyworms are actively feeding.
Homeowners like granular products because they:
Wisdom Lawn Granular provides broad-spectrum insect control and helps protect your lawn from armyworms and many other common turf insects.
It’s a great option for homeowners looking for dependable, long-lasting insect control throughout the season.
When you need fast knockdown or want to target specific areas, liquid insecticides are an excellent choice.
Wisdom Pro L+H is a professional-grade insecticide that controls a wide variety of lawn insects, including armyworms.
Benefits include:
Bifen 7.9 is another trusted solution used by homeowners and lawn care professionals for controlling armyworms and many other damaging insects.
It’s an excellent option when you want professional-grade performance and reliable protection throughout the growing season.
While no lawn is completely immune, a few simple practices can reduce your risk.
A dense, healthy lawn is better equipped to recover from insect damage.
Proper mowing, watering, and fertilization all contribute to stronger turf.
Walk your yard every week during the summer.
Look for:
Finding an infestation early can save a significant portion of your lawn.
Armyworms don’t wait—and neither should you.
Applying the appropriate insecticide at the first sign of activity can dramatically reduce damage and stop infestations before they spread.
Armyworms can cause extensive damage in a surprisingly short amount of time, but they don’t have to ruin your lawn.
Knowing what to look for, acting quickly, and choosing the right treatment can help protect your investment and keep your yard looking its best all season long.
At ProSolutions, we carry professional-grade insecticides trusted by homeowners and lawn care professionals alike.
With the right products and a quick response, you can stop armyworms in their tracks and get your lawn back on the path to healthy, green growth.