Himalayan BalsamInvasive Weeds are increasingly becoming recognised as an environmental and economic problem throughout the UK. Three main species are recognised as particularly detrimental including Giant Hogweed, Japanese Knotweed and Himalayan Balsam. In 2008, ART commenced a survey of these species on Ayrshire rivers and undertook an eradication programme for Giant Hogweed on the upper River Ayr. Giant Hogweed is a particularly dangerous plant that can cause severe burns and blisters to humans when their skin comes into contact with the sap of the plant.

Surveys of invasive weed distribution on the main watercourses in Ayrshire have been undertaken. The results are detailed in the maps available on this site. More detail is available from ART. Due to the ever changing distribution of invasive weeds these maps represent the distribution at the time of survey and will be updated as and when required. ART cannot be held liable for omissions or errors that may occur.

Inappropriate methods of control include strimming, cutting and excavating, all of which may lead to the rapid spread of plants. Ayrshire Rivers Trust (ART) can advise landowners on best practice when dealing with these species. Contact either Stuart or Gordon at ART for assistance.

Please click on the following pdf link for a copy of advice to control the invasive non native weeds in a river environment.

Advice for controlling Invasive Weeds.pdf (647Kb)

For all species near watercourses, application of chemicals must be approved by SEARS (Scottish Government) prior to commencement.