Content by Amanda Bachmann

Red-brown colored weevil with bent antennae originating on the elongated mouthparts.

Red Sunflower Seed Weevils Emerging in South Dakota

Red sunflower seed weevil adults are emerging in South Dakota and some have been observed in sunflower fields. Learn how to scout and manage this pest before it impacts your sunflowers.

Corn silks with a beetle on them.

Redheaded Flea Beetles Clipping Corn Silks

While scouting corn last week, we noticed populations of redheaded flea beetles. These defoliators were removing leaf tissue, but the bigger issue with redheaded flea beetles is that they feed on corn silks as well.

Small, green teardrop shaped insects on a green, soybean stem with pink flower.

Soybean Aphids Are Active in South Dakota

Small populations of soybean aphids were recently identified while scouting soybean in the Volga and South Shore areas. This is a good reminder that scouting should be ongoing to ensure that populations do not exceed thresholds.

Eight green beetles in the top portion of the image and seven yellow beetles with varying black stripes in the bottom portion of the image.

Corn Rootworm Adults Are Emerging in South Dakota

It’s that time of the year when corn rootworms begin emerging in South Dakota. Learn some expert tips for monitoring populations in corn fields to determine if management is necessary.

White wheat head on an otherwise green plant.

Wheat Stem Maggots Observed in South Dakota Wheat

When scouting wheat, the presence of bleached heads is often the result of feeding activity by wheat stem maggots. Learn some expert tips for identifying this pest and recognizing its activity in wheat.

Several small, light colored grasshopper nymphs feeding on green leaves plants. The leaves of the plants have small holes in them.

Grasshoppers Causing Headaches in South Dakota Gardens

Grasshopper populations are causing extensive defoliation around yards and gardens in our region this summer. Learn some important considerations for scouting populations and applying insecticides if needed.

Squash vine borer moth on plant.

Squash Vine Borer Activity Estimate: June 21, 2023

Squash vine borer moths will soon emerge across much of South Dakota, and their larva can cause serious damage to squash plants. See our latest activity predictions and management recommendations based on forecasted conditions from around the state.

Left: Common asparagus beetle adult. Right: Twelve-spotted asparagus beetle adult.

Asparagus Beetles Active in South Dakota

Two insects that we recommend scouting for in asparagus are the common asparagus beetle and the twelve-spotted asparagus beetle. Learn how to identify and manage both before they cause serious issues in your garden.

Striped cucumber beetle and spotted cucumber beetle.

Striped Cucumber Beetles Are Active in South Dakota

South Dakota is home to two species of cucumber beetles that can cause severe injury to cucurbits, including squash, cucumbers, melons and pumpkins. Learn how to detect and manage both beetles before they impact your harvest.

Squash vine borer moth on plant.

Squash Vine Borer Activity Estimate: June 16, 2023

Squash vine borer moths will soon emerge across much of South Dakota, and their larva can cause serious damage to squash plants. See our latest activity predictions and management recommendations based on forecasted conditions from around the state.