1. Pinus aristata   pine   sycamore   cedar   maple   Hint Half-n-half Clue   2. Picea pungens   spruce   ash   cedar   hibiscus   Half-n-half Clue   3. Betula nigra   cedar   spruce   sycamore   birch   Half-n-half Clue   4. Platanus occidentalis   pine   oak   ash   sycamore   Half-n-half Clue   5. Juniperus virginiana   cedar   maple   hickory   walnut   Half-n-half Clue   6. Hibiscus lasiocarpus   maple   pine   ash   hibiscus   Half-n-half Clue   7. Acer rubrum   maple   cedar   spruce   ash   Half-n-half Clue