Vitax SBK Brushwood Killer is a tough weedkiller suitable for brambles, thistles, nettles and tree stumps. It is safe to use near grass and can be applied from May to October. From June to August, it's ideal for woody weeds, while in Autumn and Winter, it's best for tree stumps. The liquid formula is clear and comes in a 500ml size, covering an area of approximately 83.61 square meters.