1. Castanea dentata   fir   beech   chestnut   garlic   Hint Half-n-half Clue   2. Allium sativum   holly   chestnut   garlic   elm   Half-n-half Clue   3. Rosa indica   rose   holly   onion   chestnut   Half-n-half Clue   4. Ilex opaca   fir   fig   beech   holly   Half-n-half Clue   5. Ulmus americana   lotus   fig   elm   fir   Half-n-half Clue   6. Ficus carica   holly   beech   fig   rose   Half-n-half Clue   7. Abies magnifica   fig   onion   fir   lotus   Half-n-half Clue