Insect & Pests

All Insect & Pests Content
Bumble bee foraging on a pink swamp milkweed flower.
Oct 29

Virtual Pollinator Workshop

SDSU Extension will host a virtual Pollinator Workshop on October 29 from 9:00 a.m. to 12:30 p.m. CDT.

A brown spider with black markings resting on top of wooden baseboard along a wall.

Spider-Proofing Your Home This Fall

During fall, spiders often try to find safe places to escape the cooler weather. Unsurprisingly, a warm cozy home is often high on their list. Thankfully, there are some simple steps you can take to help prevent spiders, and other arthropods, from invading your home.

Rows of empty white, plastic pesticide containers.

Private Applicator Training for Pesticides

Private applicator certification is required before an agricultural producer can purchase or use a restricted use pesticide.

A red sprayer in a green field with a cloudy sky in the background.

Commercial Applicator Training for Pesticides

Those who apply pesticides for hire or as a government employee that applies pesticides while performing work duties, must have a commercial applicator license.

Group of people watching a presentation during at pesticide applicator training
Oct 20 - 21

Pine Ridge & Rosebud Pesticide Applicator Training

SDSU Extension will host a pesticide applicator training provided to the Pine Ridge and Rosebud communities, held at Crossroads Inn & Annex (102 1st Ave, Martin, SD 57551) on October 20 and 21, 2026.

tall trees in the Black Hills

Tree Pest Alert

From seasonal issues and timely recommendations to disease diagnosis and expert advice, the Tree Pest Alert is a trusted resource for selecting, planting and caring for trees and shrubs all year round.

Small weevil covered in dense reddish-orange hairs sitting on a green leaf.

Trap Cropping as an Alternative Management Option for Red Sunflower Seed Weevils in the Dakotas

Learn how trap cropping can be used as an alternative management option for red sunflower seed weevils.

Grain storage bin.

Steps to Prevent Stored Grain Infestations

As fall harvest is approaching it is important to ensure that grain bins are prepared in the best possible manner to prevent insect infestations.

Yellow corn kernels with damage.

Small Black Beetles Infesting the Tips of Corn: What you should know

There has been a recent increase in small, black beetles infesting the tips of corn ears and often being found in damaged kernels. There are three species of beetles, often referred to collectively as sap beetles, that can be found feeding on corn.

Sunflower moth, banded sunflower moth, and sunflower maggot adult.

Sunflower Pest Recap

During 2026, we will be producing a new weekly update on sunflower insect pest activity. This information will be attained via a sampling network of eight locations that are in central South Dakota.