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Two poisonous rangeland plants. Left: Woolly Locoweed.  Right: Lambert Crazyweed (Purple Locoweed).

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.

Three woody plants. From left: Ponderosa pine tree, chokecherry bush and greasewood.

Poisonous Plants on Rangelands: Woody Species

Several woody plant species that are poisonous to livestock are found throughout South Dakota rangelands, including ponderosa pine, chokecherry, greasewood and broom snakeweed.

Paul O. Johnson making notes about a field of corn

SDSU Extension to Tackle Weed, Pest and Drought Inquiries at State Fair

August 23, 2021

To address drought concerns, as well as weed and pest inquiries, South Dakota State University Extension will feature two booth locations at the 2021 South Dakota State Fair Sept. 2-6 in Huron.

several small eastern red cedar trees growing in rangeland

‘Baa-d Cedars’ Field Day Examines Goat-Targeted Grazing on Cedars

September 17, 2021

South Dakota State University Extension invites the public to an interactive Eastern Red Cedar Management Field Day to see the impact goats can have in controlling the most widely distributed conifer across eastern North America.

Canada thistle growing in a pasture.

Noxious Weeds of South Dakota

Pictorial reference guide of noxious weeds in South Dakota

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.

Two white, newborn lambs under a red heat lamp in a barn.

Sheep Facilities and Moisture

Fact sheet for keeping a barn comfortable and dry to increase lamb survival.

Youth being fitted with a bike helmet.

4-H Bike Rodeo and Safety

Overview document including complete lesson plans for a 4-H Bike Rodeo and Safety program to make youth aware of the importance of riding their bike.

Monarch butterfly collecting pollen on a blazing star plant.

Understanding the Critical Role of Broadleaf Pollinator Plants in Pastures

Understanding the economic role of pollinators is the first step towards understanding their diverse values to grassland and crop systems.

An organic garden with flowers, plants, land vegetables growing.

Organic Herbicides

Many gardeners across the state of South Dakota desire to have weed-free gardens, yards and flowerbeds. Many homeowners do not want to use inorganic herbicides due to their potential health effects.