The seasons of #JapaneseKnotweed – in the winter the leaves as with most plants turn brown & yellow and usually at 1st frost the leaf falls #Knotweed #InvasiveWeeds https://t.co/6LPIqIDYRAThe seasons of #JapaneseKnotweed – in the winter the leaves as with most plants turn brown & 4832872 The seasons of #JapaneseKnotweed – in the winter the leaves as with