Book excerpt: 'A garden should be just a little too big to keep the whole cultivated. Then it gives it a chance to go a little wild in spots Edna Walling, landscape designer Waratah or wattle? Chrysanthemum or rose? Planting Dreams celebrates the artistry and imagination that have shaped Australian gardens. Respected garden historian Richard Aitken explores the environmental and social influences that have helped produce our unique gardening culture."