The Environment Agency and the University of Bristol, have teamed up to help prevent the spread of 3 particularly problematic invasive non-native plant species ( Japanese knotweed, Himalayan balsam and Floating pennywort). The app is available free and shows you how to identify each species and enables you to easily upload geo-located sightings. http://planttracker.naturelocator.org/
(Published 05/07/2012)