Geoff Hodge BONNIER FAKTA Published in association with The Royal Horticultural Society Design and layout copyright © Octopus Publishing Group Ltd 2011 Text copyright © The Royal Horticultural Society 2011 Author Geoff Hodge First published in Great Britain in 2011 by Mitchell Beazley, an imprint of Octopus Publishing Group Ltd, Endeavour House, 189 Shaftesbury Avenue, London WC2H 8JY ISBN: 978-91-7424-227-0 www.bonnierfakta.se