THIS IS A DRAFT
The species account below is an early version, drafted around 2003. It has been provided here to aid understanding, but please be aware it may not fully tally with the up-to-date map and statistics shown below.
Fallopia japonica
Japanese Knotweed
Species Details
Japanese Knotweed is unfortunately an established perennial of waysides, waste places and tips. It is frequent throughout our area except for the high moors of the Dark Peak. It is sometimes grown in gardens from where it escapes as a throwout. Once established it forms a troublesome weed, as its dense thickets prevent almost any other plant growing with it (Charter 1997 & 1999). It is indigenous to eastern Asia.