| 2025-06-16 | Colorful shrubs in the genus Rhododendron |
| 2025-01-11 | Their petals are used to make a traditional Korean wine called "dugyeonju" |
| 2022-03-09 | Flowering plants associated with the Augusta National golf course |
| 2020-10-30 | Plants whose name derives from the Greek for "dry" |
| 2019-05-16 | Relatives of rhododendrons |
| 2018-03-13 | Relatives of rhododendrons |
| 2014-06-18 | Cousins of rhododendrons |
| 2012-09-02 | Rhododendron relatives |
| 2008-03-27 | Showy shrubs |
| 2004-03-20 | Heath family members |
| 2000-11-18 | Shrubs of the heath family |
| 1998-02-27 | Spring bloomers |
| 1996-02-03 | Blooming shrubs |