Weeds & Invasive Plants
All Weeds & Invasive Plants Content
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.
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.
Sorghum Weed Control
Early competition, especially from grass, is critical for successfully controlling weeds in sorghum. There are preemergence as well as postemergence herbicides available for this crop. Early treatment provides the best control of broadleaved weeds with crop stage also being a critical factor for some postemergence treatments.
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.
Poisonous Plants on Rangelands: Deathcamas and Lupine
With prolonged drought conditions throughout many areas of South Dakota, there is an increase of invasive weeds and poisonous plants on rangelands. Identification of poisonous plants is crucial to ensure livestock production is not compromised.
Poisonous Plants on Rangelands: Hemlock, Halogeton and Buffalo Bur
Several species of poisonous plants are invasive and can easily establish dense stands when there is a disturbance on rangelands. Hemlocks, halogeton and buffalo bur can all be found throughout South Dakota and are toxic to livestock.
Poisonous Plants on Rangelands: Locoweed and Crazyweed
Locoweed and crazyweed are found throughout South Dakota rangelands, and both can cause livestock poisoning.The names locoweed and crazyweed are often used interchangeably. However, there are notable differences between the species.
Poisonous Plants on Rangelands: Larkspur and Poisonvetch
Larkspurs are the second leading cause for all livestock deaths from toxic plant poisoning. Poisonvetches are considered accumulator plants that uptake excessive levels of selenium and cause toxicity problems in cattle.
Sweet Clover Poisoning
Hay that contains sweet clover can be an excellent feed as long as the dicoumarol level is known and feeding management is used to prevent poisoning.