Other Knotweeds Identification Giant knotweed has very large leaves, up to 40cm long, with a heart shaped base. Bohemian knotweed (hybrid) has leaves up to 25cm long, with a slightly curved base. Its leaf…
Japanese Knotweed Identification Japanese knotweed (Fallopia japonica) leaves are curved, with a pointed tip and a flat-base. They are a lush green color and are arranged in a zig zag pattern. In summer, the…