Noxious Weed - Catsear

 

Catsear, or Hypochaeris radicata, is a noxious weed found in many horse pastures. The plant is native to Europe, but has also been introduced to the Americas, Japan, Australia and New Zealand. Also known as false dandelion, catsear is commonly mistaken for true dandelions as both plants carry similar flowers which form windborne seeds. These plants also have a rosette of leaves and a central taproot. Key distinctions can be made however when comparing the stems and leaves of these two, unique plants. Catsear flowering stems are forked and solid with multiple flowers per plant, whereas dandelions possess unforked stems that are hollow with a single flower. The leaves of catsear are dark green, lobe-shaped and hairy which is in stark contrast to dandelions, which have jagged, hairless leaves that are a lighter shade of green. Catsear and dandelions are typically prevalent at different times of the year as well. Catsear is more commonly seen in early summer, with dandelions more prominent during early spring. Mild, humid conditions are known to promote growth for both plant species. This was a concern for horse owners in 2012, when there was an increased presence of catsear in horse pastures.

 

Catsear is typically not harmful unless consumed in large quantities. However, it is suspected of causing stringhalt in horses if consumed in excess. Stringhalt is a neurologic issue characterized by a sudden, exaggerated flexion of one or both hind legs of the horse. It is most easily seen while the horse is walking, trotting, backing up slowly, turning on the affected leg, or suddenly frightened or excited. When a horse has stringhalt due to catsear consumption it is referred to as Australian stringhalt, due to the prevalence of catsear in Australia. Stringhalt has been associated with poisoning from vetch and sweet pea plants as well. If you suspect your horse is having health-related issues from consuming toxic plants, remove your horse from the area containing the plant and contact your veterinarian immediately.

 

Horse owners must be vigilant in caring for their pastures and managing catsear presence to reduce risk. Unlike many other weeds, horses may eat catsear even if other quality forage is available. It is recommended that catsear be removed, by either digging up the plant (including roots) or applying an herbicide. Contact your local county Extension office to determine which herbicide to use and the appropriate application amount. Follow directions found on the herbicide label carefully and ensure that horses are kept off of the treated area as directed.

 

If you need assistance with identifying and managing catsear, please reach out to your local county Extension office.

Video: Evolution of Beef Cattle Farming

The Clear Conversations podcast took to the road for a special episode recorded in Nashville during CattleCon, bringing listeners straight into the heart of the cattle industry. Host Tracy Sellers welcomed rancher Steve Wooten of Beatty Canyon Ranch in Colorado for a wide-ranging discussion that blended family history and sustainability, particularly as it relates to the future of beef production.

Sustainability emerged as a central theme of the conversation, a word that Wooten acknowledges can mean very different things depending on who you ask. For him, sustainability starts with the soil. Healthy soil produces healthy grass, which supports efficient cattle capable of producing year after year with minimal external inputs. It’s an approach that equally considers vegetation, animal efficiency, and long-term profitability.

That philosophy aligned naturally with Wooten’s involvement in the U.S. Roundtable for Sustainable Beef, where he served as a representative for the Colorado Cattlemen’s Association. The roundtable brings together the entire beef supply chain—from producers to retailers—along with universities, NGOs, and allied industries. Its goal is not regulation, Wooten emphasized, but collaboration, shared learning, and continuous improvement.