Plant of the Week – 2nd Nov 2016

Family: Polygonaceae


Genus: It is a giant, erect perennial herb which forms dense thickets. Stems grow 4-5 m in a single season and bear large, alternate leaves up to 40cm long with heart-shaped bases. In summer plants bear dense panicles of small green-white flowers and seed is sometimes produced. It hybridises with Japanese Knotweed to give a highly invasive hybrid knotweed F. x bohemica.


Details: Giant knotweed has been planted in large gardens and private estates for at least 100 years and has escaped into the wild via throw-outs and river flooding. It is widespread but not abundant across the British Isles and is much less common than Japanese Knotweed.

Well done to all those who guessed correctly on #Tuesdaychallenge. Follow @IWSLtd for next week’s plant of the week!