Roundup GC Concentrated Weedkiller is concentrate systemic weedkiller that kills weeds from the inside out. It is ideal for large areas. Fast Action Roundup attacks the roots to stop weeds returning. The fast acting formula starts working within hours. It also fully degrades in soil to allow replanting. Use Roundup GC Concentrated Weedkiller from February to November. Roundup GC Concentrated Weedkiller 540ml will treat up to 540m
