4 Winter Strategies for Woody Weed Elimination in Pastures

By Andi Anderson

As winter sets in, pastures may reveal the persistent presence of unwanted woody weeds, such as multiflora rose, posing challenges for livestock and pasture health. Effective control strategies during winter not only improve pasture conditions but also reduce potential hazards for animals.

1. Mechanical Methods: Mechanical control involves cutting or pulling woody weeds when the ground isn't frozen. Immediate results can be achieved, but persistence is crucial, as roots left in the ground may generate new plants. While providing instant gratification, this method requires ongoing effort
2. Herbicidal Applications: Utilize winter's free time for herbicidal interventions. Short grass facilitates the identification of small plants like multiflora rose. Apply targeted herbicides through basal bark or cut stump treatments during plant dormancy, minimizing non-target damage
3. Basal Bark Treatment: Effective during dormancy (mid-December to early April), basal bark applications utilize triclopyr-based herbicides mixed with oil-based carriers. Application occurs from ground level up to 15 inches on the plant's base. Careful coverage without forming puddles is crucial. A dye can be added for treated plant identification. Adhering to label instructions, especially grazing restrictions, is essential.
4. Cut Stump Treatment: Ideal for situations where trees, once cut or mowed, produce numerous new shoots, cut stump treatments use triclopyr-based herbicides or water-based alternatives like glyphosate. For oil-based products, coating the outside of the stump and the cut top is necessary. Water-based products target only the cut surface and cambium layer near the stump's edge. Immediate treatment after cutting is vital to prevent surface drying and sealing.

Concerns arise if treated plants have root grafts with desirable trees, potentially affecting non-target trees. While more pertinent in woodlots, it's wise to consult local Extension Educators for guidance.

Addressing unwanted woody weeds in pastures during winter enhances livestock well-being, minimizes flat tire risks, and reduces injuries caused by thorns. A proactive approach, utilizing both mechanical and herbicidal methods, ensures a more resilient and thriving pasture environment for the upcoming seasons.

Photo Credit: gettyimages-r-j-seymour