Brambles, gorse, and broom are tough weeds that can grow quickly and invade areas that could be grazed. And now is the time to tackle them, according to Corteva Agriscience’s Nicola Perry.
“These ‘woody’ weeds typically grow around the edges of fields and gateways,” she says. “And spot treatment is the best way to tackle them, spraying between June and the end of August before the plants start to die back in the autumn.”
“Perennial weeds, such as docks and thistles, need cutting down to the ground before spraying the regrowth two to three weeks later. But bramble bushes, gorse and broom do not need cutting back and should be sprayed thoroughly, wetting all of the foliage, but avoiding any run-off.”
Grazon Pro is ideal for spraying via a hand-held applicator like a knapsack. This herbicide, containing clopyralid and triclopyr, is a professional-use product and spray operators must be certified to apply it. They should also wear personal protective equipment (PPE) including a face shield, gloves, coveralls, and rubber boots.
The rate of application is 60ml in 10 litres of water. After application, livestock should be excluded for at least seven days. The product is safe to grass and is rain fast in just two hours.
It also offers good control of other invasive weeds, such as Himalayan balsam and Japanese knotweed. More details can be found via the Corteva Grassland App.