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It is not particularly widespread in the UK, and bears little resemblance to the main knotweed species. It grows up to 60-90cm tall and has pink-green, tubular, crooked stems that are often free of any leaves on the bottom two-thirds. Leaves are variable, but long and pointed. They grow at approximately 90° to the stems, are dark to mid-green and have a distinctive 'herring-bone' pattern on them. The undersides of the leaves are lighter in colour and covered in white hairs, giving them a felt-like appearance. Flowers are tiny, bell-shaped and appear in mid-summer. They are white or pale pink in colour and are produced loosely along short, upright spikes. |
