1. Acer rubrum   maple   hibiscus   ash   birch   Hint Half-n-half Clue   2. Platanus occidentalis   hickory   birch   pine   sycamore   Half-n-half Clue   3. Juniperus virginiana   hibiscus   spruce   cedar   ash   Half-n-half Clue   4. Carya ordorata   hickory   birch   spruce   maple   Half-n-half Clue   5. Picea pungens   walnut   spruce   hickory   birch   Half-n-half Clue   6. Juglans nigra   spruce   hibiscus   pine   walnut   Half-n-half Clue   7. Quercus velutina   hibiscus   ash   oak   hickory   Half-n-half Clue