Guess the phrase

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Across
  1. 2. a red decoration on the tree
  2. 3. a colour of the star
  3. 5. we put decoration __ the box
  4. 7. made of water when it`s cold
  5. 8. a decoration on the fireplace, usually round and green
  6. 11. the month before winter
  7. 13. we decorate it at Christmas
Down
  1. 1. a Christmas plant with red berries
  2. 4. a Christmas tree decoration
  3. 6. the first winter month
  4. 9. decorations that give light
  5. 10. we put it on top of the tree
  6. 12. they make toys for Santa