If you have found Himalayan balsam (or any other invasive non-native plant species) please use PlantTracker to add a record. If you use a smartphone, you can download a free App, which allows you to quickly and easily report a sighting of Himalayan balsam (and other invasive species). Search for Plant Tracker in your app store.

PlantTracker hopes to build the most complete picture yet of the location of high priority invasive plant species.You can read more about the project on their website.