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Insect & Pests

All Insect & Pests Content

an orange lady beetle with nine black spots

Lady Beetles of South Dakota

Lady beetles are one of the most familiar groups of beneficial insects. Farmers and gardeners appreciate them for devouring insect pests. Both adult lady beetles and caterpillar-like juveniles eat pests.

White grub with a C-shaped, white to cream-colored body, tan to brown head, 3 pairs of legs, and transparent abdomen.

White Grub Damage to Lawns

White grubs are root-infesting larvae that are the immature stages of scarab beetles. Grub-infested turfgrass may turn brown and die from drought stress due to the inability to take up water from loss of roots.

cluster of bright red raspberries with small black beetles burrowed inside some berries.

Picnic Beetles on Raspberries

Picnic beetles, a small beetle that loves fermenting fruit (and potato salad at picnics), commonly feed on raspberries. The beetle can quickly ruin a ripe raspberry as they burrow around inside the fruit.

several yellow and black striped beetles feeding on plant leaves

What's Bugging Your Garden? Cucumber Beetles

Striped cucumber beetles are little yellow and black striped beetles that are fairly small, but what they lack in size they make up for in numbers and appetite.

A yellow-orange insect with 10 narrow stripes running down the length of its body.

What’s Bugging Your Garden? Colorado Potato Beetles

Colorado potato beetles have become all too common in many home gardens and also in community gardens where potatoes are commonly grown. If left untreated, they can defoliate potato plants, drastically cutting yields of the delicious tubers that so many of us love to eat.

two orange and white caterpillars feeding on green plant leaves.

What’s Bugging Your Garden? Broom Moth

There is a new pest problem for flower growers that enjoy Baptisia (false indigo) called the Genista Broom Moth. It is actually the caterpillars that cause the damage.

plastic container with lid removed. several earwigs are floating in the oil inside.

Earwigs in the Garden: Less-Toxic Control Alternative

Since earwigs provide some ecological service as natural enemies, I hesitate to recommend a pesticide application to control it. As an alternative least-toxic solution, bait trapping the earwigs should work to reduce the insect’s population to the non-threatening levels.

white fly sitting on a green plant leaf

Biological Control of Pests in High Tunnels

Major insect and mite pests in high tunnels include aphids, thrips, white flies, and spider mites. Biological control uses living organisms (natural enemies) to suppress or limit pest populations to levels that do not cause economic injury to the crop.

hand holding three green apples with a dimpled, lumpy appearance

Apple Issues

Learn to identify and manage common apple tree issues including: apple maggot injury, apple scab, cedar apple rust, and fruit cracking.

Man wearing a long-sleeved shirt and waterproof gloves loading pesticide-contaminated clothing into a washer. Courtesy: NDSU Extension

How to Properly Launder Insecticide-Contaminated Clothes

It is important to prevent insecticide exposure from occurring when laundering contaminated or potentially contaminated clothing.