The https://weedystoner.com/get-weed-in-taveuni-fiji/ Diaries
This very invasive plant spreads by means of rhizomes. How to manage it: Knotweed needs a multi-pronged technique, for instance consistent mowing and herbicide software in spring or early summer season and retreatment in early fall.
Wild violet grows as a broadleaf perennial groundcover in clumps