It is one of the fastest-growing and most destructive plants in the country, becoming a problem not just on roadways and green spaces but in private homes and walls, meaning planning permission could soon be refused for houses and other buildings in areas infested by Japanese knotweed.
It is such a problem that it is an offence to plant, disperse, allow dispersal or cause the spread of Japanese knotweed and is already a major problem in places like Skibbereen, Co Cork.
The National Biodiversity Data Centre was set up by the Department of Arts, Heritage and the Gaeltacht and they collate, manage and analyse and disseminate data on Ireland’s biodiversity.
And Japanese knotweed falls under their remit. The National Biodiversity Data Centre collect and record data of areas affected by Japanese knotweed and then work with state bodies, local authorities, NGO’s and interested groups to tackle the threat of the invasive species.
Japanese Knotweed in the centre of Kenmare -the worst invasive weed in Ireland and will come up thro' concrete paths pic.twitter.com/1VZmRed0Id— GatheringAbbeyfeale (@HarnettReunion) August 15, 2014
They have collected data and have compiled an interactive map where you can see how badly areas of Ireland are affected by knotweed.
What we want to know is how does it impact you? Have had a problem with the invasive plant in you home or area? Send us your videos and pictures of how Japanese knotweed affects you on Facebook and Twitter using the hashtag #IEKnotweed.