How to identify Japanese knotweed
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 virilant, 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.