| title | ISBN-13 | year of publica- tion |
|---|---|---|
| Adventures With Hardy Bulbs | 978-0-02-040840-6 | 1990 |
| Color in My Garden: An American Gardener's Palette | 978-0-87113-373-1 | 1990 |
| The fragrant path | 978-0-02-031991-7 | 1990 |
| What Happens in My Garden | 978-0-02-040841-3 | 1991 |