| title | ISBN-13 | year of publication |
|---|---|---|
| Everyday Mysteries | 978-0-525-45363-5 | 1995 |
| Flowers, Fruits, Seeds | 978-0-13-322397-2 | 1988 |
| Jack-in-the-Pulpit: 9 | 978-0-525-45073-3 | 1993 |
| Sundew Stranglers: Plants That Eat Insects | 978-0-525-45208-9 | 1995 |
| Wonderful Pussy Willows | 978-0-525-44867-9 | 1992 |