Japanese knotweed

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There are six principal identifiers of Japanese knotweed: Leaf: mid-green, shield-shaped (pointed tip with a straight edge along the top). Leaves can vary in size. Petiole (leaf stem): distinctive zig-zag, due to leaves growing alternately along the stem. Often pink/purple in colour. Figure 1: Japanese knotweed leaf and petiole Stem: bamboo-like, hollow, jointed. Green, often...

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