Project aims to eradicate invasive plant species

LANDOWNERS and farmers along the River Bride in North Cork have been asked to contribute to a survey aimed at mapping, and ultimately eradicating, non-native invasive plants species along its course.

Working in partnership with the Bride Conservation Project, Cork County Council has commissioned JBA Consulting to undertake the survey, which is targeting various species including Giant Hogweed, Himalayan Balsam and Japanese Knotweed.

County Mayor Cllr Christopher O’Sullivan said species that had been planted in large gardens and estates in the past had escaped and spread along our hedgerows and river corridors.

“They have adapted well to the Irish climate and can spread quickly, out-competing our native species and disrupting the natural balance of our native ecosystems,” he said.

To date the survey has discovered Himalayan Balsam and Giant Hogweed dominating bank-side vegetation along a stretch of the river between Castlelyons and the Waterford border and in many instances this has spread into adjacent fields, especially in areas prone to flooding.

Signs of bank erosion have also been noted in areas with severe infestations of Giant Hogweed and Himalayan Balsam, as these species die back in the wintertime leaving bare banks exposed.

Giant Hogweed is also a public health concern as this species has a toxic sap which can cause severe skin burns to people who become exposed to it. This large plant should not be confused the smaller native Hogweed, which is harmless.

Over the coming weeks the survey will concentrate on the upper sections of the River Bride as well as tributaries believed to be the source of some invasive species.

“Once the mapping of invasive species is complete, Cork County Council will engage with landowners to develop a catchment-wide eradication strategy to be implemented over the coming years,” said Mayor O’Sullivan.

Landowners and farmers who wish to enquire about the project or provide information on invasive species in their area can contact Sharon Casey, Cork County Council on 021-4285869, or the Bride Project office in Castlelyons on 025-37519.