Holly Farrell's interest in the beneficial health effects of gardening began at the same time as her interest in gardening: a nasty bout of glandular fever after graduating from university left her longing to get outside. Volunteering in gardens sparked a career change into horticulture and an appreciation of the positive physical and mental impact of working with nature. She spent two years at RHS Gardens Wisley where she gained the Wisley Diploma in Practical Horticulture. Holly is the author of the award-winning RHS Plants from Pips and RHS Miniature Garden Grower, and Planting Plans for Your Kitchen Garden. The Royal Horticultural Society (RHS) is the UK's largest gardening charity, dedicated to advancing horticulture and promoting good gardening. Its charitable work includes providing expert advice and information, training the next generation of gardeners and promoting the ecological, aesthetic and psychological benefits of gardening in an urban environment.