This comprehensive book, written by an acknowledged expert, is packed with useful information and is an invaluable reference work that covers all aspects of protected horticulture. I Topics covered include: . The appropriate siting for a greenhouse enterprise, and covers greenhouse design principles and commercial glasshouses . Cladding materials, the development and use of polythene-clad tunnel structures, and greenhouse energy sources . The greenhouse environment, growing rooms, irrigation, composts and other growing media . A detailed chapter on hydroponics . Plant nutrients, fertilizers, pest and disease control, nursery hygiene and much more. AUTHOR: Thady Barrett started his career at the former ADAS Experimental Horticulture Stations at Luddington and Lee Valley while studying horticulture at Writtle College in Essex. He gained the Royal Horticultural Society's NDH in Commercial Horticulture [now known as the MHort (RHA)] and an MHort degree. Thady is a member of the International Plant Producer's Society. An expert in growing salad crops, ornamental plants and cut flowers, for twenty years Thady was senior lecturer in commercial horticulture at Writtle College. He is now a horticultural consultant and provides technical advice to small and medium-sized ornamental plant nurseries. SELLING POINTS: . Essential reading for keen amateur gardeners with an interest in growing plants under glass. . An invaluable reference work for undergraduate and post-graduate horticultural students, consultants, commercial horticultural growers and for all those involved in the protected horticultural sector. . Packed with information on greenhouse design principles, commercial glasshouses and polytunnel structures. . Fully illustrated with 86 colour photographs, graphs and drawings. . Thady Barrett was a senior lecturer in commercial horticulture at Writtle College for twenty years and now provides a horticultural consultancy service to ornamental plant nurseries. 86 colour photographs, graphs and drawings