How to Get Rid of Cutworms?

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Welcome to the battleground of the green thumb! As every gardener knows, nurturing plants involves a bit of a skirmish against various pests and nuisances. One such notorious adversary is the cutworm, capable of wreaking havoc on your beloved plants if left unchecked. Additionally, their feeding habits can create entry points for diseases, further jeopardizing the well-being of your plants.

What are Cutworms?

Let’s start with the basics. Cutworms are not your garden-variety worms. These sneaky critters are caterpillars, the larvae of certain species of moths. Despite their name, they don’t cut plants, instead, they feed on them, often severing them at the base. This can lead to wilting, stunted growth, and even the demise of your precious plants.

What Do Cutworms Turn Into?

Cutworms, like all caterpillars, undergo metamorphosis. After gorging themselves on your plants, they enter a pupal stage, during which they undergo dramatic changes before emerging as adult moths. These moths may not be as destructive as their larval counterparts, but they can still lay eggs that will hatch into a new generation of cutworms.

Where Do Cutworms Come From?

Cutworms are not extraterrestrial invaders, they are native to many regions around the world. They typically overwinter as larvae or pupae in the soil, emerging in the spring hungry and ready to feast on your tender young plants. They can also be introduced to your garden through contaminated soil, plant debris, or even the wind.

How to Get Rid of Cutworms?

Now for the million-dollar question: how do you rid your garden of these persistent pests? There are several strategies you can employ, ranging from cultural and mechanical controls to biological and chemical interventions.

  • Handpicking: Patrolling your garden at night with a flashlight can help you identify and remove cutworms manually.
  • Barrier Methods: Creating physical barriers, such as cardboard collars or plastic cups, around the base of plants can prevent cutworms from reaching them.
  • Biological Controls: Introducing natural predators, such as parasitic wasps or nematodes, can help keep cutworm populations in check.
  • Organic Pesticides: Certain organic pesticides, such as those containing Bacillus thuringiensis (Bt), can effectively target cutworms while minimizing harm to beneficial insects and the environment.
  • Crop Rotation: Rotating crops can disrupt the life cycle of cutworms and reduce their numbers over time.

How to Prevent Cutworms?

An ounce of prevention is worth a pound of cure, as the saying goes. By implementing preventive measures, you can reduce the likelihood of a cutworm infestation in your garden.

  • Till the Soil: By tilling the soil in the fall, you can expose cutworm pupae to predators and harsh weather conditions, reducing their survival rate.
  • Clean Up Debris: Remove plant debris and weeds from your garden regularly to eliminate potential hiding spots for cutworms.
  • Use Floating Row Covers: Covering vulnerable plants with floating row covers can prevent adult moths from laying eggs on them.
  • Practice Companion Planting: Some plants, such as marigolds and onions, are believed to repel cutworms when planted alongside susceptible crops.
  • Monitor Regularly: Keep a close eye on your plants for signs of cutworm damage, and take action promptly if you spot any offenders.

What Do Cutworms Eat?

Cutworms are not picky eaters, they’ll feast on a wide variety of plants, including vegetables, fruits, flowers, and ornamentals. Some of their favorite targets include tomatoes, peppers, cabbage, lettuce, and beans. By diversifying your garden and planting a mix of species, you can reduce the risk of widespread damage from cutworms.


Are cutworms harmful to humans?

No, cutworms are not harmful to humans. While they may give you a startle if you encounter them in your garden, they pose no direct threat to human health.

Can cutworms fly?

No, cutworms are not capable of flight. However, the adult moths they eventually transform into are capable flyers.

How long do cutworms live?

The lifespan of a cutworm varies depending on factors such as species, environmental conditions, and availability of food. Generally, they spend several weeks to a few months in their larval stage before pupating.

Do cutworms only feed at night?

While cutworms are most active at night, they may also feed during the day if conditions are cloudy or overcast. However, they tend to retreat to the soil during periods of bright sunlight.

Can I use chemical pesticides to control cutworms?

Chemical pesticides can be effective against cutworms, but they should be used as a last resort due to their potential harm to beneficial insects and the environment. If using pesticides, always follow the manufacturer’s instructions and take appropriate safety precautions.

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