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Weeds & Invasive Plants

All Weeds & Invasive Plants Content
A dense stand of tall, green bulbous bluegrass growing near a field.

Be on the Lookout: Bulbous Bluegrass

Bulbous bluegrass is a resilient, invasive grass that can tolerate a wide variety of environmental conditions. Learn how to identify and manage it before it impacts forage production.

Plant Profiles: Palmer Amaranth, Waterhemp, and Pigweed.

Vegetative Identification of Palmer Amaranth, Waterhemp, and Redroot Pigweed

Palmer amaranth is a non-native weed sharing common characteristics with waterhemp and redroot pigweed. Learn how to identify all three of these aggressive weeds before they become an issue in your fields this growing season.

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

June 20 Was the Last Day to Apply Dicamba Postemergence in Dicamba-Tolerant Soybean in South Dakota

The cutoff date to apply dicamba postemergence was June 20, 2023. Eric Jones, Assistant Professor and SDSU Extension Weed Management Specialist, shares some important updates now that the deadline has passed.

Tractor with sprayer applying postemergence herbicide to soybeans.

Considerations for Postemergence Herbicides

Postemergence herbicide applications can protect your crop yields by limiting in-season weed competition. Learn everything you need to know before firing up your sprayer.

Tractor applying preemergence herbicide on a freshly planted field.

Considerations for Preemergence Herbicides

Weeds emerging with crop plants have the potential to reduce yields. Learn some tips for applying preemergence herbicides to control weeds before emergence to ensure that your yields aren't limited by early-season weeds.

Aerial photo of a field revealing crop productivity within a specified management zone.

Knowing the Soil Types in Your Fields Can Increase Weed Control

As soil temperatures increase, many farmers are beginning to plant crops and start preemergent weed control. Learn the important role that soil type can play in getting the most out of preemergence herbicide applications.

Patch of broadleaf weeds growing in a spring lawn.

Considerations for Weed Control in Lawns

A weed-free lawn requires continuous maintenance year-round. From mowing considerations to herbicide applications, learn some expert tips for getting your lawn off to a great start this spring!

SDSU Extension welcomes new weed management specialist

April 21, 2023

South Dakota State University Extension is pleased to announce the hire of Eric Jones as the new weed management specialist.

corn field with sunrise in the background

Best Management Practices for Corn Production

iGrow Corn is your unbiased, research-based guide to corn production, providing the latest recommendations to help increase yield, reduce input costs and protect your investment.

Gardener re-potting several seedlings that were started indoors over winter.

Apply now to attend SDSU Extension Master Gardener and Home Horticulture Course

February 24, 2023

Applications are now being accepted for the South Dakota State University Extension Master Gardener and Home Horticulture course offered March 23 to June 13.