Diana Grenfell is co-founder of the British Hosta and Hemerocallis Society and a life member of the American Hosta Society. With her husband, Roger Grounds, she is former co-owner of Apple Court, a British nursery specializing in hostas, daylilies and grasses. Diana has done much to raise the profile of hostas throughout the world, broadcasting, lecturing and writing many authoritative books and articles on the plant. Her garden in Gloucestershire is home to a National Plant Collection of miniature hostas.