1. walnut   Juglans nigra   Carya ordorata   Platanus occidentalis   Juniperus virginiana   Hint Half-n-half Clue   2. birch   Platanus occidentalis   Betula nigra   Acer rubrum   Picea pungens   Half-n-half Clue   3. spruce   Platanus occidentalis   Picea pungens   Juniperus virginiana   Quercus velutina   Half-n-half Clue   4. pine   Pinus aristata   Picea pungens   Acer rubrum   Juniperus virginiana   Half-n-half Clue   5. ash   Pinus aristata   Carya ordorata   Platanus occidentalis   Fraxinus americana   Half-n-half Clue   6. cedar   Carya ordorata   Hibiscus lasiocarpus   Quercus velutina   Juniperus virginiana   Half-n-half Clue   7. hibiscus   Carya ordorata   Picea pungens   Juniperus virginiana   Hibiscus lasiocarpus   Half-n-half Clue