1. Pinus aristata   hibiscus   sycamore   walnut   pine   Hint Half-n-half Clue   2. Picea pungens   hickory   walnut   spruce   maple   Half-n-half Clue   3. Hibiscus lasiocarpus   oak   spruce   hibiscus   hickory   Half-n-half Clue   4. Carya ordorata   hickory   cedar   maple   sycamore   Half-n-half Clue   5. Acer rubrum   maple   pine   hickory   walnut   Half-n-half Clue   6. Fraxinus americana   oak   walnut   ash   hibiscus   Half-n-half Clue   7. Quercus velutina   cedar   hibiscus   oak   maple   Half-n-half Clue