Roundup Tree Stump & Rootkiller kills trees, tree stumps, brambles, nettles, deep rooted and woody weeds. The only weed killer to tackle Japanese knotweed! Roundup Tree Stump & Root Killer is a concentrate glyphosate weed killer that is absorbed by leaves and freshly cut woody surfaces and moves throughout the whole plant above and below ground to control standing coniferous and deciduous trees, newly cut tree stumps, tree saplings, bracken, brambles, nettles and other tough perennial and woody weeds. Kills tree stumps, standing trees, saplings and more resistant, deep rooted weeds such as Japanese Knotweed Works for either coniferous or deciduous trees Kills most garden weeds and tree stumps with a single application Liquid concentrate with easy to use dispensing bottle for correct mixture every time Applied with brush Fully degrades in soil by microbial action Children and pets need not be excluded from treated areas once dry Leaves no harmful residue