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The Daily Insight

What do potato beetles do

Author

William Taylor

Published Mar 01, 2026

Potato beetles are pests of plants in the nightshade family. … Both the adults and the larvae eat the leaves of these plants. Getting rid of potato beetles is a priority for the vegetable gardener due to the range of plants the pest can infest.

Are Colorado potato beetles bad?

They start out very small, and get bigger as they grow into adult beetles. As they grow, they eat the leaves of their host plant. … Left unchecked, the Colorado Potato Beetle can be deadly to your potato crop.

What will kill Colorado potato beetle?

For the larval through adult stages, Spinosad, the active ingredient in Monterey Garden Insect Spray works to control the Colorado Potato Beetle. Beauveria bassiana, the active ingredient in Botanigard, kills both larvae and adults – use either as a soil drench or as a foliar application to the plants.

Why are Colorado potato beetles a pest?

Colorado potato beetle is the most destructive potato pest in Europe. Both adults and larvae feed on this host, and often cause complete defoliation of potato plants, with considerable yield losses of up to 50%.

Can Colorado potato beetles fly?

Remove or crush the yellowish orange eggs on the underside of leaves. New adult beetles can fly into gardens so be sure to check your potatoes regularly. Handpicking may be less practical in larger gardens.

How do you prevent Colorado potato beetles?

Straw mulch around the host crop has been shown to reduce beetle numbers. Late planting may cause beetles to leave the field before potatoes emerge, resulting in lower beetle numbers. Flame crops under 3-4 inches high to kill colonizing adult beetles. Move rapidly using a tractor mounted or hand-held flamer.

Where do Colorado potato beetles come from?

The evolution of the name Colorado potato beetle is curious because the beetle is believed to have originated in central Mexico, not Colorado. It had a series of names from 1863 to 1867, including the ten-striped spearman, ten-lined potato beetle potato-bug, and new potato bug.

How do you keep potato beetles away?

Use straw mulch: Mulching heavily with straw not only helps keep the tubers out of the sunlight but also creates a habitat for predators of the Colorado potato beetle. Plant resistant or early varieties: Certain varieties of potatoes, such as Russet Burbank, have proven to be resistant to potato beetles.

Will ducks eat potato beetles?

Ducks like the beetles and will keep them under control. Chickens are normally less fond of them and also will do more harm to the plants with their scratching behavior. … – Also planting dill with the potatoes is said to keep the beetles away.

How do I get rid of leptinotarsa?

Monterey Garden Insect Spray is a popular formula that contains spinosad, and it will demolish the potato bug population very well. Finally, a pyrethrin-based spray such as Safer Brand Home & Garden Spray is also another good choice against most beetles as well as caterpillars.

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Is the Colorado potato beetle invasive?

Colorado potato beetle (CPB) is one of the most devastating invasive insects and it is native to North America. It feeds on several wild species of the genus Solamum, such as S. elaeagnifolium and S. … Beginning in the early 19th century, CPB has rapidly spread across North America, Europe, and Central Asia.

Where do potato beetles lay their eggs?

The Colorado potato beetle overwinters as an adult in the soil. It emerges early in the spring and mates. The female lays eggs on the underside of host leaves in batches of about 24 over a 4-5 week period. In total, about 500 eggs are laid per female.

Will chickens eat potato beetles?

Chickens will gladly gobble up grasshoppers, hookworms, potato beetles, termites, ticks, slugs, centipedes, spiders and scorpions. They’ll happily devour the larvae of ants, moths and termites, with a distinct partiality to beetle larvae—lawn grubs and mealworms, aka darkling beetle larvae.

What attracts potato bugs?

  • Potatoes.
  • Tomatoes.
  • Eggplant.
  • Pepper.
  • Nightshade.
  • And Ground Cherry Plants.

How do I keep potato bugs off my plants?

Surround WP (kaolin clay) forms a protective barrier film, which acts as a broad spectrum crop protectant for preventing damage from chewing pests. Monterey Garden Insect Spray (Spinosad) is a highly effective bio-pesticide recommended for use against potato beetles. For best results, apply when young.

Do birds eat Colorado potato beetles?

There are many naturally occurring controls of Colorado potato beetle. Fungi infect them, beneficial insects attack them, and toads and birds eat them. Rarely, however, do these forces combine to offer sufficient control to protect crops.

Do potato bugs play dead?

They play dead and throw up on themselves when they’re frightened and to top it all off, they’re lazy. This is good news for us – or at least those of us that are able to rotate out of potato and other solanaceous crops.

Do raccoons eat mallard ducks?

there was a killer in the neighborhood! Raccoons will eat songbirds, ducks, chickens, and eggs. They will consume frogs, shrews, moles, mice, rats, and rabbits. They will eat almost any kind of fruit as it ripens, and they also enjoy food from the trash.

Do ducks eat fire ants?

Because they nurture a special fondness for mosquito pupae, Japanese beetle larvae, potato beetles, grasshoppers, snails, slugs, flies and their larvae, fire ants and spiders, ducks are extremely effective in controlling these and other pests.

Do mallards eat bugs?

Ducks will eat just about any insect or bug. We don’t let them into the garden, but we do throw them the potato bugs and horn worms from the plants.

How do you get rid of Sowbugs?

Clean Up: Stack firewood off of the ground and move it away from the house. Move logs, boards, and stones that sowbugs could use as hiding places. Move piles of dead leaves and grass clippings. Check downspouts to be sure they drain away from the foundation.

Are potato beetles poisonous?

Potato bugs are not poisonous. However, these pests have toxin-rich saliva that can damage plants. For humans, without any toxin glands, potato bugs can not be considered harmful. Sometimes though a bite from a potato bug (Jerusalem Cricket) can be painful.

How do potato beetles adhere to surfaces?

Tarsal structures of beetles adhere to plant surfaces by secreting lipids that are liquid at normal temperatures. The Colorado potato beetle must defy gravity when climbing up vertical stems of its host plant.

Why is it called a June bug?

June bugs derive their name from the fact that adult June bugs emerge from the soil at the end of spring or the beginning of the summer. Females bury their eggs just below the soil surface. June bug larvae hatch within 3 to 4 weeks and feed on grass and plant roots from several months to as long as three years.

Where do false potato beetles live?

False potato beetles are found in the Mid-Atlantic United States and the Southeastern United States. It can also be traced to Maine. It is primarily found in states like Florida, eastern Texas, north Missouri, southern Illinois, Indiana, east Maryland, West Virginia, as well as in Virginia.

Do chickens eat Colorado beetles?

Most living insects are of interest to foraging chickens. Even if you do not allow your chickens in the garden, they will eat most live insects gathered by hand, including asparagus beetles, Colorado potato beetles and larvae, grasshoppers, slugs, and Japanese beetles.

What bugs can chickens not eat?

Bugs and Insects Chickens Won’t Eat They do not like insects that emit a strong odor such as box-elder bugs, stink bugs, and Asian lady beetles. Unfortunately, all of these are pests you’d rather not have roaming around your property. The strong smell they give off prevents them from having too many natural predators.

Can you feed chickens maggots?

Feeding maggots to chicken is an easy and economical way to provide protein and fat. … Using solider fly maggots solve all of those problems. They feast on a regular compost pile, but the absence of meat limits the occurrence of diseases.