With the sun shining down on us, we made our way to the site. On the river Almond, near the canal feeder weir, we spot our target – a stand of the invasive alien invader Himalayan balsam. We are here to end this flower’s dominance on this patch of the riverbank. Armed with a band of intrepid volunteers, kitted out in their customary waders, we crossed the river and attacked. This was one of the last opportunities to take out the plants before they produce their ballistic seed. Our task was further complicated by the fact that the balsam was intertwined with native nettles, increasing the risk to exposed skin. Thankfully, the team are a hardy bunch, taking the sting in order to complete our task. This invasive plant is a marvel of design – quick growing (up to 2.5m in height), abundant seed production (up to 800 seeds per plant) with no predators locally. These factors combine to create a plant that out-shades competitors and dominates areas by multiplying its numbers and range annually. It is therefore vital to maintain the battle against invasive spread. The team acted valiantly and, as the time lapse footage shows, we were successful in completing the mission.