| ADAMANDEVE | A named Pulmonaria, changing from pink to blue - first seen in the Garden of Eden? (4,3,3) |
| HYDRANGEA | Blooming in Japan during its rainy season, colour-changing flower ranging from white and pink to blue and purple depending on the soil pH and cultivar (9) |
| MONEY | Song from Pink Floyd's album The Dark Side of the Moon that was a hit single in the US |
| OLDER | "The sun is the same in a relative way but you're___", from Pink Floyd's "Time" (5) |
| ELM | First seen in The Netherlands in 1919, this fungus-caused condition has ravaged trees round the worl |
| EUTROPHICATION | The process of a lake changing from clean condition to waste-filled condition (14) |
| ELEVEN | How many days did Britain lose in 1752 on changing from the Julian to the Gregorian calendar? (6) |
| ROBIN | Beginning to relax, old boy at home may be seen in the garden (5) |
| PETUNIA | Dog brought to university by top academic could be seen in the garden |
| TROTSKYITE | Bird about to go off something blue, first of eggs being red |
| CORALISLAND | Ironclad Sal coming from pink area in the sea? (5,6) |
| SUN | "You run and run to catch up with the_ but it's sinking", from Pink Floyd's "Time" (3) |
| YODLE | Sing by suddenly changing from a natural voice to a falsetto and back. (5) |
| RATHER | Somewhat in a lather when changing from left to right (6) |
| VISTA | Sight first seen in the outskirts of Virginia (5) |
| ATMS | Producers of 20s, first seen in the '60s |
| CASTLE | The rook is first seen in the corner (6) |
| STREAK | Form of exhibitionism first seen in the mid-1970s |
| YWCA | Initialism first seen in the U.S. in 1866 |
| GROUNDS | They're fine particles first seen in the estate's property |
