The third clue - "Key to the Treasure"

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Across
  1. 2. purple flowers
  2. 5. rhymes with there
  3. 7. comes before fourth
  4. 8. helps support a house
  5. 9. the opposite of right
Down
  1. 1. the center
  2. 3. what seeds do when planted
  3. 4. a hole for a key
  4. 6. rhymes with wide
  5. 8. the opposite of push