
HOW TO IDENTIFY AND CONTROL CUTWORMS.
Few things are more frustrating for a gardener than finding young seedlings chewed or cut at the soil line. The culprit is often the cutworm, a caterpillar-like larva of certain moths. Unlike other pests, cutworms can completely destroy a young plant overnight. This guide explains what cutworms are and how to stop them using safe, easy methods, no chemicals needed, so your garden stays healthy and safe for the whole family. How to recognize Cutworms Knowing what to look for makes controlling cutworms much easier. Here’s what you should know: Physical and Cultural Methods Cutworms primarily target vulnerable, young seedlings, the “window of risk” is relatively short. Using physical barriers is the most professional and effective way to ensure 100% survival rates without the use of chemical sprays: 1. Protective Collars (The Barrier Method) The most reliable defense is the installation of a physical barrier. This prevents the larva from reaching the stem. 2. The Stem Proximity Tactic For gardeners with large numbers of seedlings, placing a small “splint” (such as a toothpick or a small twig) flush against the stem can be effective. Because a cutworm must encircle the stem to cut it, the presence of a rigid object prevents the larva from getting the necessary grip to feed. 3. Soil Disturbance and Tillage Cultivating the top two inches of soil in early spring can expose overwintering larvae to natural predators like birds and ground beetles. Furthermore, removing “mat-forming” weeds around the perimeter of the garden reduces the number of sites where adult moths prefer to lay their eggs. Eradication of Cutworms If damage has already occurred, the goal shifts from prevention to extraction: Method Description Best For Manual Extraction Gently dig around the base of a damaged plant with a trowel. You will usually find the larva hiding 1 inch deep. Small garden plots Night Scouting Use a flashlight 1-2 hours after sunset to hand-pick larvae directly off the plants. Immediate population reduction Diatomaceous Earth Spread a circle of food-grade DE around the plant base. The microscopic sharp edges dehydrate the larvae. Large infestations Conclusion Managing cutworms does not require complex chemical interventions. By focusing on the critical first two weeks of a plant’s life and implementing physical barriers, you can effectively neutralize the threat. Maintaining a clean garden perimeter and utilizing mechanical controls like collars ensures a healthy, productive garden that remains safe for children and pets to explore. This guide is meant for general information and learning only and is not intended as professional advice.




