{"id":592,"date":"2026-10-21T13:16:29","date_gmt":"2026-10-21T05:16:29","guid":{"rendered":"http:\/\/www.blazeballsports.com\/blog\/?p=592"},"modified":"2026-10-21T13:16:29","modified_gmt":"2026-10-21T05:16:29","slug":"what-insects-attack-potatoes-4afd-d884ae","status":"publish","type":"post","link":"http:\/\/www.blazeballsports.com\/blog\/2026\/10\/21\/what-insects-attack-potatoes-4afd-d884ae\/","title":{"rendered":"What insects attack potatoes?"},"content":{"rendered":"

If you run a small to mid-sized potato farm, you know there\u2019s more to a successful harvest than just good soil, consistent watering, and proper spacing. Over the 12 years I\u2019ve been a potato supplier, the single biggest threat to our crops hasn\u2019t been bad weather or market volatility\u2014it\u2019s the insects that target potatoes at every stage of growth. I\u2019ve spent countless hours walking fields, hand-picking pests, testing organic controls, and talking entomologists to figure out exactly which bugs we deal with, and how they impact both yield and quality. Today, I\u2019m breaking down the most common insects that attack potatoes, what to look for, and why that matters if you\u2019re buying bulk potatoes from someone like me. Potato<\/a><\/p>\n

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First up, and arguably the most destructive pest North American potato growers face, is the Colorado potato beetle (Leptinotarsa decemlineata). These bugs are smart, stubborn, and adapt faster than almost any other insect I\u2019ve encountered. Early in the season, adult beetles emerge from overwintering in the soil\u2014they can hide in garden debris or even deep furrows for years, waiting until potato plants sprout. By mid-spring, they\u2019re laying bright orange clusters of eggs on the undersides of potato leaves; a single female can lay up to 800 eggs in a month, so a small infestation explodes quickly. Once the larvae hatch, they go through four growth stages, all of which eat voraciously. By late summer, both adults and larvae skeletonize leaves, cutting off the plant\u2019s ability to photosynthesize. I\u2019ve seen a field that looked healthy on Monday go from 30% defoliation to 90% by Friday because of an unchecked beetle outbreak. Even worse, these beetles have developed resistance to almost every synthetic insecticide on the market, which is why we rotate our control methods\u2014row covers, neem oil, and even introducing predatory stink bugs to keep their numbers down. For buyers, this matters because a severe infestation doesn\u2019t just reduce yield; it also leaves tubers more vulnerable to rot during storage, which means more waste by the time potatoes reach your warehouse.<\/p>\n

Next, the potato tuberworm (Phthorimaea operculella) is the hidden threat that most growers only notice after harvest. Unlike the Colorado potato beetle, which attacks above-ground foliage, tuberworms target the tubers themselves. Adult moths lay eggs on potato leaves, stems, or even exposed tubers near the soil surface. When the tiny larvae hatch, they burrow straight into the tuber, creating winding tunnels filled with frass (insect waste) that make the potato unmarketable. What\u2019s tricky about tuberworms is that they thrive in warm, dry conditions\u2014we\u2019ve seen spikes in their numbers during hot, drought years, which is exactly when water-stressed potatoes are weaker. If you store potatoes in humid, warm conditions after harvest, the larvae can even continue developing in the storage pile, turning a small infestation into a full-blown problem within weeks. Early in my career, I lost a 50-pound bin of premium russets to tuberworms because we delayed harvest by two days during a heatwave\u2014never again. We now time harvests to avoid the hottest part of summer, and we inspect every bin before storage to catch any signs of tunneling, so our customers get clean, intact tubers.<\/p>\n

Wireworms, the larval stage of click beetles, are another underground pest that can destroy a potato crop before you even see it above ground. These small, shiny, yellowish-brown worms live in soil for two to six years, feeding on the roots and tubers of potato plants. They chew small, round holes in young tubers, and larger, deep gouges in mature ones. Even a single wireworm hole is enough to make a potato unfit for retail or food service, since it creates an entry point for soft rot and fungal pathogens. Wireworms are especially common in fields that were recently in grass or corn, because adult click beetles lay eggs in grassy areas. We used to plant potatoes in a field that had been in alfalfa for three years, and every harvest had a 25% reject rate due to wireworm damage\u2014until we adjusted our crop rotation to plant soybeans in between, which disrupts the beetle\u2019s life cycle. For buyers, it\u2019s important to know that wireworm damage often doesn\u2019t show up until you wash potatoes, so consistent sorting and quality checks are non-negotiable for suppliers like us.<\/p>\n

Don\u2019t sleep on aphids, either. Potato aphids (Myzus persicae) are tiny, soft-bodied insects that cluster on the undersides of leaves and stems. They suck sap from the plant, which can stunt growth and reduce tuber size, but their real harm is spreading plant viruses. The most common potato virus they carry is potato virus Y (PVY), which can reduce yield by up to 50% in infected plants, and make tubers unfit for seed stock. Aphids reproduce incredibly quickly\u2014one female can give birth to 100 live nymphs in a week, and they can spread from field to field via wind. We keep an eye on aphid numbers by placing yellow sticky traps along field edges, and we release ladybugs in small infestations instead of spraying harsh chemicals. For buyers, especially those who use potatoes for seed or processed goods, PVY contamination can lead to a full product recall, so we prioritize virus-free seed potatoes and regular testing to prevent this.<\/p>\n

There are a few other less common but still impactful pests I\u2019ve encountered over the years. The potato flea beetle, for example, creates tiny, shot-like holes in leaves, which doesn\u2019t usually kill the plant but can make potatoes more susceptible to early blight. And the white grub, the larva of June beetles, eats roots and tubers, similar to wireworms, though they\u2019re less common in our sandy soil fields. What\u2019s consistent across all these pests is that they\u2019re not just a farmer\u2019s problem\u2014they directly affect the quality, yield, and shelf life of the potatoes you buy.<\/p>\n

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As a potato supplier, my job isn\u2019t just to dig up potatoes and send them your way; it\u2019s to protect those crops from every threat, big or small, so you get a product you can rely on. That means integrating pest management from the moment we plant, not waiting until we see damage. Crop rotation, companion planting, biological controls (like ladybugs and predatory wasps), and regular field monitoring are all part of how we keep pests in check. We also have strict post-harvest protocols: sorting potatoes within 24 hours of harvest, curing them at the right temperature, and inspecting every bin for signs of insect damage or rot. If you\u2019re in the market for high-quality, consistently sourced potatoes, let\u2019s connect to discuss your needs, share more about our pest management practices, and work out a supply agreement that fits your business.<\/p>\n

Ginger<\/a> References<\/p>\n

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  1. Radcliffe, E. B., & Rabb, R. L. (1997). Insect Pests of Potato: Global Perspectives on Biology and Management. Academic Press.<\/li>\n
  2. Lapointe, S. L. (2010). Potato Tuberworm: A Review of its Biology, Ecology, and Management. Journal of Insect Science, 10(45).<\/li>\n
  3. Weber, D. C. (2003). Colorado Potato Beetle: Biology and Management. Annual Review of Entomology, 48, 375-401.<\/li>\n
  4. Flanders, K. L., et al. (2013). Management of Aphid Vectors of Potato Virus Y in Seed Potato Production. American Journal of Potato Research, 90(3), 219-228.<\/li>\n
  5. Vernon, R. S., et al. (2014). Wireworms as Pests of Potatoes: Biology and Management. Canadian Journal of Plant Science, 94(2), 287-302.<\/li>\n<\/ol>\n
    \n

    Jining Green Garden International Trade Co.,Ltd<\/a>
    Feel free to buy quality and healthy potato from professional potato suppliers in China here.
    Address: No. 34 Hongxingzhong RD.Jining City.Shandong Province
    E-mail: lucy@cngreengarden.cn
    WebSite:     https:\/\/www.garlicgreengarden.com\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

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