Timberwolf 500 SC Active Ingredient 500 g/litre TERBUTHYLAZINE in the form of a suspension concentrate. Description For the control of broadleaf and grass weeds in forestry, established maize, lucerne, peas and sweetcorn. Timberwolf 500 SC Herbicide can also be used as a non-selective, residual herbicide in non-crop areas. Pack Sizes 20 L Downloads