| DEBARK | remove a tree's outer layer |
| BARK | Tree's outer layer |
| AXIL | From Latin for "armpit", word for the angle between a leaf-stalk and a stem or a branch and a tree's trunk (4) |
| RINGBARK | Remove a strip of the bark round a tree's circumference, thus killing it (4,4) |
| CANOPY | From Greek for "mosquito", word for a net over a bed originally, later for various overhead things, including an awning, parachute, parasol, the sky or a tree's crowning overstory (6) |
| CLIPPING | A snippet for a scrapbook, shaved-off piece of coin or pared twig of a tree's limb, each from the Old Norse for "cut, shear, trim" (8) |
| EASTER | A tree's chopped for a festival (6) |
| TEASER | A tree's possibly a problem (6) |
| AMBER | Once part of a tree's immune system, a gem occurring in colours from yellow and orange to red and brown (5) |
| TRUNK | Elephant's proboscis; a box for travel or storage; or, a tree's stem (5) |
| TWIGLOO | A temporary shelter made from a tree's branches and the like (7) |
| SAPWOOD | It's beneath a tree's inner bark |
| SEPARATES | Running sap, a tree's branches (9) |
| STERE | Measure of a tree's wood |
| AGE | What a tree's rings signify |
| TEAROSES | So a tree's producing these flowers (3-5) |
| RESET | Fix, as a tree's broken limb |
| EATERS | A tree's rotten apples (6) |
| LEAVES | A tree's green covering (6) |
| RINGS | They show a tree's age |
