An innovative technology company is hoping to incentivise volunteers to help tackle the invasive species, Himalayan Balsam.

Gloucestershire Wildlife Trust (GWT) is enlisting the help of Gloucester and Cheltenham residents to help them combat the non-native species along the River Chelt throughout June.

The team at GWT is teaming up with Crowdorsa, whose technology reach means they can offer a financial reward to volunteers.

Imported to the UK by Victorian botanists in 1839, the plant has no natural rivals and can quickly dominate ditches and river banks, wiping out indigenous species.