| RUNTOSEED | As a plant past its best will do - rue doesn't, strangely (3,2,4) |
| THYME | A plant past your home's missing half (5) |
| MUDDIER | More incoherent male did rue getting drunk (7) |
| ENDMOST | Retaining mass doesn't, strangely, last |
| REACTORSREUNION | Event when all the staff of a nuclear power plant (past and present) catch up? |
| TESTATOR | Trial list put back by someone with the best will in the world perhaps (8) |
| CREAM | The best will naturally come out on top (5) |
| OVERBLOWN | Past its best, like the balloon about to pop? (9) |
| CINERARIA | Queen into arnica, I suspect, as a plant |
| NARCISSUS | US agent is above suspicion as a plant |
| GERMINATE | Begin to grow, as a plant |
| DROOPIEST | Least robust looking, as a plant |
| SPEEDWELL | Rate excellently as a plant (9) |
| STAKE | Upright rod woven over a strand in basketry; a pea stick or beanpole as a plant support; or, a wooden post forming part of a fence (5) |
| ASTI | A sparkling wine somewhat past its best (4) |
| AGEING | Bad gag about a German getting past its best? (6) |
| STALE | For a second time, drink was past its best (5) |
| RATTANPALM | Tree for a basket case, growing as a plant in a tram (6,4) |
| RUNDRY | Marathon past it's best? It's water off a duck's back perhaps! (3,3) |
| STAPLE | Commodity past its best without smallest amount of preservatives (6) |
