![]() Japanese knotweed can be confused with other plants including: The creamy-white flower tassels produced in late summer and early autumn reach up to 15cm (6in). ![]() The stems die back to ground level in winter, but the dry canes remain for several months or longer. ![]() Leaves are heart or shovel-shaped and up to 14cm (5½in) in length and borne alternately (in a zig zag pattern) along the stems. These canes have characteristic purple flecks, and produce branches from nodes along its length. These grow rapidly, producing in summer, dense stands of tall bamboo-like canes which grow to 2.1m (7ft) tall. In spring, reddish-purple fleshy shoots emerge from crimson-pink buds at ground level. Malvern Autumn Show - 22–24 September 2023.RHS Garden Wisley Flower Show - 5–10 September 2023.RHS Garden Rosemoor Flower Show - 18–20 August 2023.RHS Garden Hyde Hall Flower Show - 2–6 August 2023.RHS Flower Show Tatton Park - 19–23 July 2023.RHS Hampton Court Palace Garden Festival - 4–9 July 2023.
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