| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Annuals for Northern California | 978-1-55105-249-6 | 2002 | Don Williamson |
| Gardening Month by Month in Northern California | 978-1-55105-365-3 | 2004 | " |
| Perennials for Northern California | 978-1-55105-251-9 | 2002 | " |
| Tree and Shrub Gardening for Northern California | 978-1-55105-275-5 | 2003 | " |