HOW TO IDENTIFY JAPANESE KNOTWEED
The easy way to identify Japanese Knotweed is by sending Knotweed Services (UK) Ltd your images. It’s a quick and free service – simply fill in the form to the right or use any of the methods available.
The images below show you the different appearances of Japanese Knotweed in each season.
March – April
Shoots and stems are a purple/red colour with curled pinky reddish leaves. As the canes grow the leaves gradually unfurl and turn green.”
May – August
Shoots and stems are green with purple speckles. Leaves become heart shaped and turn green.
September – October
Stems are virulent, growing upwards of up to six feet, cream/white flowers appear late summer/autumn.
November – February
Stems change to dark brown and are hollow, brittle and absent of leaves or flowers.