Nith District Salmon Fishery Board
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Nith Catchment Fishery Trust
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Invasive Species

Giant hogweed flowerhead

Invasive Non-Native Riparian Plant Species Project (INNRPS)

Anyone who has been following the work of the Trust over the last 5 years will be aware of the Invasive Non-native Plant Species Project that the Trust has been involved in.  This project was started by the Nith District Salmon Fishery Board in 2010 with the aim of tackling three non-native riparian plants species within the Nith catchment; Japanese knotweed, Giant hogweed and Himalayan Balsam. See links below for ID sheets about the species.

Japanese Knotweed

Giant Hogweed


American Skunk Cabbage

Five years on and over 200,000 stems of Japanese knotweed, 35000 Giant hogweed plants have been treated and 45,500 square metres of Himalayan balsam has been pulled. In addition, Skunk cabbage was identified in the catchment in 2013 and since then nearly 100 plants have been treated.

Some before and after photos

This is an amazing achievement and has had a noticeable impact on the Japanese knotweed, Giant hogweed and Skunk cabbage present in the catchment. We still have a way to go yet as these plants are notoriously difficult to eradicate but the work over the last few years has proved that something positive can be done to tackle these invasive species and easing access for anglers, walkers and canoeists along the length of the river. Follow the link below to read all about the work carried out over the last 5 years.

INNPS Final Report 2010 – 2015

This project has been funded by SEPA Water Environment Fund, Landfill Fund, D&G Council Common Good Fund, Nithsdale Area Committee, LEADER and various landowners throughout the catchment.  A big thank you to all of the volunteers that have picked up sprayers and donned gloves in a bid to control these invasive species.

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