LINTHWAITE Cubs have been tackling a troublesome plant that is threatening local habitats.
The 17th Linthwaite Cubs helped to clear Himalayan balsam from the village's Spa Fields.
The plant was first imported from the western Himalayas in 1839.
It grows up to 3 metres high and is so dense that, if left unchecked, it can suppress native plants.
Himalayan balsam likes damp ground, such as river banks, but its rapid growth can lead to erosion.
When the seed pods mature they explode when touched and scatter seeds for up to 7 metres.
The Cubs cleaned up the plant, helped by River Colne project officer Mick Smith, from the Colne Valley Trust in Slaithwaite.
He said: "The management of Himalayan balsam is relatively easy when you've got a group as hard-working as the 17th Linthwaite Cubs.
"We cleared a large area in no time and I gave a brief talk as to why we needed to control this plant. The kids were really interested and eager to get stuck in," added Mr Smith.
Joanne Hinchcliff, one of the Cub leaders, said "This is a great project for the Cubs to get involved in.
"I think we'll come back each year and adopt this bit of the river and keep it clear.
" We are in desperate need for new tents, so this project is a great opportunity to raise our profile."