Cryptic flowers

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Across
  1. 3. An age in your salary (6)
  2. 6. Used at the greyhound track (8)
  3. 7. Dr Williams' musical instrument (10,4)
  4. 10. Prickly part of a pig (9)
  5. 12. At the fair I saw some (4)
  6. 15. Got up, a girl's name (4)
  7. 16. Birds sounding like cats (8)
  8. 18. A well dressed wild beast (9)
  9. 19. This music's not yours (7)
  10. 20. Trumpet (5)
  11. 21. Essential in music (5)
  12. 22. Oh, Why three peas? (5)
Down
  1. 1. Man using old fashioned piece of office equipment (7)
  2. 2. Saint's carbuncle (2,5,4)
  3. 4. Worn in winter (5)
  4. 5. Game played by fabulous animal (10)
  5. 8. Swedes lie in confusion on the ground (9)
  6. 9. Capital, self importance (6,5)
  7. 11. Cunning animal's accessory (8)
  8. 13. Household implement (5)
  9. 14. You can't mail lace in a muddle (8)
  10. 17. Some say it's the best policy (7)