Challenging Crossword

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Across
  1. 1. Small cover
  2. 4. African Lily
  3. 5. Going to seed
  4. 7. Short underground stems
  5. 9. Common Whitebeam
  6. 12. Japanese maple
  7. 13. Christmas bulb
  8. 15. The leaf stalk
Down
  1. 2. Losing nutrients through the soil
  2. 3. Achillea
  3. 6. Primary root
  4. 8. artichoke edible sunflower tuber
  5. 10. Holistic lunar farming
  6. 11. Where pollen is produced
  7. 14. Use to raise soil pH