Book excerpt: The definitive practical guide to gardening bull;Features expert advice on gardening techniques, planning and maintenance, and on growing ornamental plants, fruits and vegetables bull;Draws on the expertise of 50 specialist contributors under the eminent editorship of Christopher Brickell bull;More than 3,000 specially commissioned colour photographs, including 400 step-by-step sequences bull;Comprehensively revised and expanded to include new plants and gardening styles, and the very latest horticultural developments