What is Japanese Knotweed? Japanese Knotweed (Fallopia japonica) is a herbaceous perennial plant. This species is extremely common and widespread across Ireland. It is most prominent in areas of wasteland, roadsides, landfills, wetlands and riparian (river) areas across the entire country. Where did it come from? Japanese Knotweed is native to East Asia in … Continue reading Japanese Knotweed (Fallopia japonica)
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