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