This is some of the gear we use down the creek. When we weed woody shrubs we use the cut-stump method. All it involves is cutting the plant below the first branch and then squirting a bit of Glyphosate biactive on the cut stump. Glyphosate is a non-residual herbicide which blocks an enzyme necessary for protein synthesis. It doesn’t harm animals because they don’t have this enzyme. It breaks down quickly in the soil and sunlight.