How to Get Rid of Wireworms?

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Wireworms, the wriggly culprits often found lurking in the soil of your beloved garden, are not just any ordinary pests. These are the larvae of click beetles and are known for their voracious appetite for plant roots, seeds, and tubers. They can cause significant damage to a wide range of plants, particularly root crops like potatoes, carrots, and onions, as well as grain crops like corn and wheat.

What Are Wireworms?

Wireworms are slender, elongated, and segmented larvae that can measure between 0.5 and 1.5 inches long, depending on the species and stage of development. They are usually tan, brown, or yellow and have a hard exoskeleton and cylindrical body, giving them a somewhat jointed, wire-like appearance.

What Do Wireworms Turn Into?

After spending 2 to 6 years munching away in their larval stage, wireworms eventually pupate and transform into adult click beetles. These beetles are usually brown or black and have a characteristic clicking mechanism that allows them to jump when placed on their backs.

Where Do Wireworms Come From?

Wireworms are most commonly found in areas with high soil moisture and organic matter. They are particularly prevalent in regions used for irrigated crop production and in fields that have been recently converted from grassy areas.

How to Get Rid of Wireworms?

Getting rid of wireworms can be a challenging task due to their extended lifecycle and the length of time they spend in the soil. However, there are several strategies you can employ:

  • Crop Rotation: Regular rotation of crops can disrupt the lifecycle of wireworms, reducing their populations over time.
  • Biological Control: Utilizing nematodes that target wireworms can be an effective way to control their population.
  • Cultivation: Turning the soil can expose wireworms to predators like birds.
  • Trap Crops: Plant trap crops like mustard or marigolds to lure wireworms away from main crops, then remove and destroy the infested plants.
  • Chemical Control: While not always the preferred method due to environmental concerns, insecticides can be used as a last resort for severe infestations.

How to Prevent Wireworms?

Preventing wireworms involves creating an environment that is less conducive to their survival and reproduction.

  • Encourage Natural Predators: Birds, wasps, hedgehogs, and ground beetles can help keep wireworm populations in check.
  • Soil Management: Cultivating the soil and keeping it well-drained can reduce the likelihood of wireworm infestation.
  • Avoid Planting in Infested Areas: Inspect soil and compost heaps for wireworms and avoid planting susceptible crops in known infested areas.

What Do Wireworms Eat?

Wireworms primarily feed on the roots of various plants, including vegetables like beans, beets, cabbage, carrots, lettuce, onion, peas, potatoes, radishes, and corn. They can also affect cereal crops and herbaceous ornamentals.


Can wireworms affect all types of plants?

Wireworms have a broad host range but are especially problematic for root and grain crops.

Are wireworms active all year round?

Yes, wireworms can be active throughout the year, feeding on plant roots and seeds.

Are Wireworms Harmful to Humans?

Wireworms primarily pose a threat to plants and crops and are not directly harmful to humans. However, their presence can lead to economic losses and food insecurity.

Can wireworms survive cold weather?

Wireworms can overwinter in the soil, going deeper during cold weather and moving closer to the surface during warmer conditions.

Are There Any Early Warning Signs of Wireworm Infestations?

Keep an eye out for wilting or stunted growth, chewed roots, and the presence of wireworms during soil inspections as early indicators of an infestation.

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