It was introduced to the uk as an ornamental garden plant but has since become an invasive weed subject to legal control measures. Japanese knotweed is an invasive species of plant which spreads rapidly and overwhelms other plants Find out how to spot japanese knotweed using our guide which includes images showing the plan growing throughout the seasons.
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Japanese knotweed is an invasive and persistent weed
Learn how to identify and remove it, in our guide
Japanese knotweed, fallopia japonica, is a pervasive garden weed Japanese knotweed might look harmless, but its underground root system can spread several metres and quietly cause significant disruption It's been known to crack patios and driveways, weaken building foundations, and put pressure on walls, fences and garden structures. Originally native to japan, taiwan and china, japanese knotweed was introduced to europe as an ornamental plant in the 19th century
It is now common throughout the uk, but cannot be cut or manually removed because of its ability to grow from tiny fragments smaller than a one pence piece. Japanese knotweed is a very tall plant with large triangular leaves, hollow, red stems that are a bit like bamboo, and small, white, tufty flowers that appear in late summer and autumn. Get rid of japanese knotweed with our ultimate guide Species history, identification, treatment programs and costs, also diy options.
This visual guide will help you recognise japanese knotweed at various growth stages, ensuring prompt action to control its spread
Why identifying japanese knotweed matters
