You might enjoy a few of these books as well. They are all very well done, informative and beautifully photographed!
Famous Gardens:
- Rosemary Verey's Making of a Garden by Rosemary Verey
- Christopher Lloyd's Gardening Year by Christopher Lloyd
- The Magic of Monet's Garden by Derek Fell
- The Garden at Hidcote by Fred Whitsey
- Gardening at Sissinghurst by Tony Lord
- The Gardens of Gertrude Jekyll by Richard Bisgrove
- Chanticleer: A Pleasure Garden by Adrian Higgins
- The Intimate Garden: Twenty Years and Four Seasons in Our Garden by Gordon Hayward and Mary Hayward
- Monet's Passion: Ideas, Inspiration and Insights from the Painter's Gardens by Elizabeth Murray
- Beth Chatto's Damp Garden by Beth Chatto
- Plant Portraits by Beth Chatto
Garden Design:
- Succession Planting for Year-Round Pleasure by Christopher Lloyd
- Color for Adventurous Gardeners by Christopher Lloyd
- Designing with Grasses by Neil Lucas
- The Book of Garden Design by John Brookes
- Designing with Plants by Piet Oudolf with Noel Kingsbury
- Your House, Your Garden: A Foolproof Approach to Garden Design by Gordon Hayward
- The Wild Garden: Expanded Edition by William Robinson and Rick Darke
- Drought Resistant Planting by Beth Chatto
Garden Journals:
Garden Maintenance:
- AHS Plant Propagation edited by Alan Toogood
- The Well-Tended Perennial Garden: Planting and Pruning Techniques by Tracy DiSabato-Aust
Horticulture:
- Botany for Gardeners: Third Edition by Brian Capon
For the shear Love of Gardening:
- Dear Friend & Gardener: Letters on Life and Gardening by Beth Chatto and Christopher Lloyd
Also, my two favorite magazines:
- The English Garden ~ great for inspiration! So many pretty gardens!
- Fine Gardening ~ more practical advice & gardening techniques, but also includes some US gardens