| Answer | Crossword Clue |
|---|---|
| FIR | Oregon's state tree, for one |
| FIR | Oregon's state tree |
| FIR | Douglas ... (Oregon's state tree) |
| ORCA | Oregon's Keiko, for one |
| ACTOR | Tree, for one. |
| ANNULUS | Tree ring, for one |
| CATALPA | Jacaranda tree, for one |
| YUCCA | Joshua tree, for one |
| POPLAR | Tulip tree, for one |
| YUCCA | The Joshua tree, for one |
| ELM | The Liberty Tree, for one |
| ELM | Boston's Liberty Tree, for one |
| ELM | Old Boston's Liberty Tree, for one |
| ELM | Boston's late Liberty Tree, for one |
| ASH | The mythical tree Yggdrasil, for one |
