| TWEED | Ultimately that unwanted plant is a border flower |
| WEED | Unwanted plant is very small and doubleheaded (4) |
| GREATWALL | Landmark that, in a way, is a border feature of this puzzle and a hint to what's missing from 10 answers |
| ORINOCO | What river is a border of Colombia and Venezuela? (7) |
| PRIMULA | Paul is confused about a border flower |
| PRIMROSE | Plain words about a border flower (8) |
| OUTSIDE | If a house plant is an 'inside' plant, what type of plant is a garden plant? (7) |
| ANNIE | A name associated with gun ultimately, that is? |
| PLUG | A ___ plant is a small seedling, usually in a small ___ of soil, sold in batches for the gardener to grow on (4) |
| ALOE | The plant is a sloe that's had no sun (4) |
| DESTITUTE | Ultimately that suet diet is seen to be very poor |
| TODDLING | Ultimately that Heather, having drunk rum, is walking unsteadily (8) |
| ASHOTINTHEDARK | Wild guesswork ultimately that is mostly random, eh? |
| COWSLIP | Plant, toxic ultimately, that hurt one playing in field (7) |
| TOWNS | Settlements: a single one ultimately that hurt the Poles |
| LENIENT | Forgiving sin ultimately, that is central to religious observance (7) |
| GRIEF | Girlfriend rings suitor, ultimately that is creating trouble (5) |
| GODETIA | Do I get a transplanted border flower? (7) |
| CUSHION | A ___ plant is a low-growing, mat-forming species, such as moss campion (7) |
| GINSENG | The root of this plant is a popular herbal remedy. (7) |
