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Grassland

All Grassland Content

Three poisonous rangeland plants. From left: Hemlock, Halogeton and Buffalo Bur.

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.

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.

Low larkspur and twogrooved poisonvetch plants growing in rangeland.

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.

purple flower with yellow center and green, fuzzy stem

Common Flowering Plants (Forbs) of South Dakota

This guide focuses on forbs, or flowering “broad-leaved” herbaceous plants, but forbs can be narrow-leaved as well.

Muddy field with no residual forage exhibiting signs of extreme soil erosion.

Five Range Management Principles: #4 Residual Forage

Residual forage is the amount of green leaf left after a grazing event. Understanding its importance can help producers capitalize on the symbiotic relationship that occurs when soil health is front and center on rangelands.

Producers surveying a rangeland site.

Five Range Management Principles: #1 Adaptive Management

Adaptive management is a process that livestock producers can incorporate into their operation to increase operation flexibility and adjust to changing conditions.

Rain gauge on a fence post along a well-managed rangeland area.

Five Range Management Principles: #5 Climate Ready

Understanding your ranching system is critical, and identifying anticipated soil-plant-animal responses during periods of dry, wet, or normal conditions will enable you to develop climate-ready practices. Learn how to get started today!

Young calves with cattle herd in spring.

Selecting a Calving Season Based on Matching Nutritional Needs and Resources

Choosing the calving season is a complex and highly individual decision for each beef cattle producer. A primary consideration in pasture-based cow-calf operations is choosing a calving season that will best match the forage supply to forage demand.

A tiger swallowtail drinking nectar from a purple blazing star flower.

Five Range Management Principles: #3 Ecosystem Biodiversity

Milkweed can help make rangelands a better environment for both cattle and neighboring plants and animals by having a shielding effect on companion plants, preventing erosion and accelerating the decomposition process, whole also providing nectar, habitat and organic material for ecosystem services.

Three producers discussing a grazing plan in a pasture.

Five Range Management Principles: #2 Creating a Grazing Plan

Creating a grazing management plan can be overwhelming. Learn the basic steps for outlining a plan, along with several resources to help identify the right strategy for your operation.