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Left: Yellow beetle with black spots present on a green leaf. Right: Red beetle with black spots.

Argus Tortoise Beetle: No, It’s Not a Lady Beetle

Every summer, we receive reports of what looks like a large yellow lady beetle, except that they are defoliating certain plants. It isn’t a lady beetle, it’s the Argus tortoise beetle.

Brown caterpillar with tan head capsule and 3, light-tan stripes running along its back.

Monitor Lawns and Gardens for Bronzed Cutworm Activity

Bronzed cutworms can be an issue for lawns and gardens in South Dakota. In grass, bronzed cutworms will feed and leave small brown circular patches. Large populations of bronzed cutworm can result in severe lawn injury.

green plant leaf with white, powdery growth throughout

Plant Problems in Cool, Wet Soil

Wet, cool soils are prime conditions for many plant diseases to thrive. Lear more about some of the most-common cool, wet weather problems.

Shiny black beetle on a white background.

Black Vine Weevils Becoming Active

Black vine weevils are now showing up across the state. It is typical for the adult beetles to emerge in early summer and begin feeding on plant foliage. They primarily feed on lilacs and yews, both common landscape shrubs. Although the adults cause minimal damage, their larvae feed on the roots and can occasionally be a threat to ornamental plants, especially those grown in pots or containers.

Numerous grayish-brown bugs gathering on the stems of a Brassica plant.

False Chinch Bugs in the Garden

Swarms of false chinch bugs have started appearing in South Dakota this month. Although they are typically only a nuisance pest, their populations can become magnified during cool, wet springs (like this year). In high abundances, false chinch bugs can pose a threat to garden plants, especially Brassica plants such as broccoli, cauliflower, turnips, and cabbage.

a yellow dandelion flower growing in a garden

Dandelion Season

The yellow flowers of spring are coming. Spring dandelion treatments are not as effective as fall, but they can be used to stop the yellow flowers from producing viable seed.

Magnified image of a springtail that is hairy and dark blue in color.

What are those black bugs jumping on the snow?

One of the first critters you may notice in early spring or even late winter are snow fleas. These tiny arthropods can be an odd sight when they appear by the hundreds on top of snow drifts that are melting on warm, sunny days.

Black hairy caterpillar with a dark brown band in the middle of its body. The caterpillar is crawling on grey cement with visible pebbles present in the substrate.

Are those woolly bear caterpillars I see crawling?

Anyone that spent the weekend outdoors may have observed flies, wasps, bees, and others flying around for the first time this year. One of these insects is a familiar one, the woolly bear caterpillar.

two beetles side-by-side. The left one is a ladybeetle. The right is a colorado potato beetle.

Beetles in Your Garden: Friends and Foes

Two types of beetles are increasingly common on vegetable garden this time of the year. Interestingly enough, one is a predator that helps out gardeners getting rid of pestiferous insects while the other is a pest busily munching on the foliage.

A collage of various plant diseases. Courtesy: USDA (iStock)

Plant and Weed Resources

Consult these resources for answers to common plant and weed issues, including: plant characteristics, plant problems (diseases, insects, and abiotic), plant selection and management, and weed identification and control.