Director and artist Derek Jarman is remembered for his unique ability to capture the natural world on the page, as well as the garden he created at Prospect Cottage in Dungeness. A new book, ‘Pharmacopoeia’, brings together the best of Jarman’s writing on nature. This week, we discuss Jarman and his legacy with author and curator Philip Hoare, and hear about a garden inspired by Jarman on the banks of Lake Geneva in Switzerland.