HPS has a national Conservation Scheme which aims to identify and preserve at least some of the plants in danger of being lost. Volunteer members of the scheme grow the plants in a variety of places across the country and report back on how well the plants have grown for them. They also propagate the plants and pass them round so it’s a good way of getting your hands on a rare plant!
For more information see www.hardy-plant.org.uk/conservation
You can contact the National Organiser on email@example.com