|What does Japanese Knotweed look like? - http://www.wwcs-group.co.uk/|
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Despite its fearsome reputation, Japanese Knotweed - Fallopia japonica, is a surprisingly attractive ornamental herbaceous plant. It was first introduced to Europe by German botanist Philipp von Siebold (1796–1866) who obtained a specimen from a Japanese volcano and brought it to Holland.
|Young Japanese Knotweed growth - http://www.wiseknotweed.com/|
Once mature, which is usually when they start to draw attention, Japanese Knotweed will achieve a height of approximately 2-4 m tall depending on conditions, and form dense stands. The hollow, bamboo-like stems are green, speckled purple, with distinct raised nodes.
|Japanese Knotweed leaf and flower - http://warehouse1.indicia.org.uk/|
Japanese Knotweed will naturally die back in early winter leaving the canes to turn brown. These canes will remain standing throughout the winter and while surprisingly brittle can be in place amongst the following spring and summer's new growth. New reddish-purple shoots appear in the spring from the ground which can grow up to an impressive, yet also worrying, 2cms a day.
For related articles click onto the following links:
JAPANESE KNOTWEED REMOVAL IN LITTLEHAMPTON
WHAT DOES JAPANESE KNOTWEED LOOK LIKE?
WHAT IS JAPANESE KNOTWEED