Roscommon County Council to host free Japanese knotweed workshops
Japanese knotweed is an invasive herbaceous perennial that can seriously damage houses, buildings, hard surfaces and infrastructure growing through concrete, tarmac and other hard surfaces. Since it was introduced as an ornamental plant in the 19th Century from Japan, Japanese Knotweed has spread across the island of Ireland, particularly along watercourses, transport routes and waste …
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