Mersey basin Campaign
Archive document


Archive document

Alien Invasion


Japanese knotweed - a plant that can grow through concrete and damage the foundations of houses. Giant hogweed - a plant that has sap that burns the skin and leaves wounds that can be aggravated by light up to six years after the initial contact. This may sound like something out of a science fiction film, but non-native invasive plants are one of the biggest threats to the UK's biodiversity. Ciara Leeming investigates some of the countries most dangerous plants and explores the problems associated with their control and eradication.

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Mersey Estuary, Upper Mersey, Bollin, Weaver, Etherow & Goyt, Irwell, Manchester Ship Canal, Manchester Waterways, Ribble, Darwen, Douglas, Liverpool, Manchester, Stockport, Cheshire, Wirral


source invasivespecies biodiversity


Ciara Leeming Photographs by: Sean Wilton, Lucy Burton SourceNW

Publication date

March 2007


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