1. Picea pungens   hickory   cedar   spruce   ash   Hint Half-n-half Clue   2. Quercus velutina   hickory   ash   birch   oak   Half-n-half Clue   3. Betula nigra   oak   maple   birch   pine   Half-n-half Clue   4. Pinus aristata   ash   pine   hickory   birch   Half-n-half Clue   5. Platanus occidentalis   sycamore   hibiscus   cedar   pine   Half-n-half Clue   6. Juglans nigra   oak   hibiscus   walnut   spruce   Half-n-half Clue   7. Fraxinus americana   hibiscus   ash   birch   hickory   Half-n-half Clue