Invasive Non Native Species

Invasive Non Native Species
Ranunculus

Ranunculus

In the late 1970’s Water crowfoot Ranunculus fluitans appeared in the River Spey in the Grantown area; within three years it had colonised the entire lower river. This plant, which had previously not been present…
Invasive Non Native Species
Himalayan balsam

Himalayan balsam

Himalayan balsam (HB) (Impatiens glandulifera)  is another highly invasive plant which has very successfully managed to spread from gardens into the wild across the UK. HB is an annual plant that reproduces from seed. It…
Invasive Non Native Species
Japanese knotweed

Japanese knotweed

Japanese knotweed (Fallopia japonica) (JPK) was introduced into the UK in the 1800’s as an ornamental garden plant. It is now widely spread throughout the UK and on the River Spey it is known to…
Invasive Non Native Species
Giant Hogweed

Giant Hogweed

Giant hogweed (Heracleum mantegazzianum) was introduced into the UK in the 1800’s as an ornamental garden plant. However it has now become naturalised in many river catchments across Scotland. On the River Spey it is…