Wireworm
Agriotes spp.
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How to spot it
Wireworms are the yellow-brown, hard larvae of click beetles and live several years in the soil. They bore narrow tunnels in potato tubers and carrots, making the harvest unsellable and often leading to rot through the wounds. The infestation is especially strong in areas that were previously meadow or heavily grassed.
Prevention
You keep the area weed-free by regular hoeing, the larvae lack grass cover, and frequent soil disturbance frees them for birds and ground beetles. Avoid planting root crops directly after cutting grass; rotate with grain or mustard for one to two years in between. Early varieties and early-planted beds largely escape late summer feeding.
Affected plants
These plants in our database are especially susceptible.
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