M.D · Michael A. Dirr · Michael D.
| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Dirr's Hardy Trees and Shrubs: An Illustrated Encyclopedia | 978-0-88192-404-6 | 1997 | Michael A. Dirr |
| Dirr's Trees and Shrubs for Warm Climates: An Illustrated Encyclopedia | 978-0-88192-525-8 | 2002 | |
| Hydrangeas for American Gardens | 978-0-88192-641-5 | 2004 | Michael A. Dirr |
| Viburnums: Flowering Shrubs for Every Season | 978-0-88192-853-2 | 2007 | |