CROCI
| Date | Clue |
|---|---|
| 2024-04-06 | Flowers that are a source of the anti-inflammatory drug colchicine |
| 2016-03-02 | Spring blooms |
| 2014-02-04 | Early bloomers |
| 2013-01-26 | Signs of spring |
| 2012-10-04 | Signs of spring |
| 2011-04-10 | Early spring bloomers |
| 2010-01-05 | Spring bloomers |
| 2009-05-08 | Perennials with cup-shaped flowers |
| 2007-04-21 | Saffron sources |
| 2006-10-22 | Hardy bulbs |
| 2003-03-25 | Showy perennials |