Spring has Sprung

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Across
  1. 2. the predominant precipitation
  2. 6. yellow flowers
  3. 7. the best part of spring
  4. 10. small flowers of spring
  5. 12. white spring flowers
  6. 13. causes 16 down
  7. 14. it returns brightly in spring much to the chagrin of mowers
  8. 15. bu-zzy little workers
  9. 17. pairs well with 11 down
  10. 18. purple and white flowers, look like grapes
  11. 19. the cause of 3 down
Down
  1. 1. the hallmark of this season
  2. 3. one reason people don't like this season
  3. 4. the child of rain and sun
  4. 5. precursor to flowers
  5. 8. a result of 2 across
  6. 9. spring holiday
  7. 11. a necessary implement
  8. 16. snow does this