Invasive Non-Native species cost the UK £1.9 billion per year and contribute to 60% of global biodiversity loss. Himalayan Balsam is a major threat to local wildlife: it outcompetes native plants, increases the long-term flood risk as well as destabalising riverbanks and accelerating riverbank erosion.
Every year we fail to act Himalayan Balsam spreads dramatically. Our mission is to empower people with the information and confidence to tackle HimalayanBalsam where they live.
23,595
nearly 3 football pitches
1,371
equivalent of two full time people for eighteen weeks
Bring on 2026
Please complete the form on the Get Involved page and share with us the details of your event.
For further information about Bolton's Big Balsam Bash please visit the Bolton Green Umbrella website: https://boltongreenumbrella.org.uk/big-balsam-bash-2026/ .
Himalayan Baslam already reported in the area and planned events to tackle it.
(click markers for more information)
Thank you for getting involved in tackling Himalayan Balsam. Every pull, bash, and clearance effort makes a real difference to our local environment and we want to celebrate that impact.
By sharing what you’ve done, you’ll help us build a clearer picture of the collective effort across our community. This information will be used to highlight and recognise everyone’s contributions, inspire others to get involved, and guide our strategy so we can be even more effective together.
It only takes a few minutes to complete, and your input really matters.Please complete the form to share your Feedback .