Spring, spring!

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Across
  1. 2. If you drop it into the soil, a new plant can grow out of it
  2. 5. A small hibernating spiky animal which wakes up in spring
  3. 6. This month is the official start of spring in the world
  4. 8. It's a dirty portion of water when much snow melts
  5. 9. In some cold countries, this month is the end of winter
Down
  1. 1. They start growing on the branches, when trees wake up after their winter sleep
  2. 3. A nice white flower which can grow from under the snow
  3. 4. A hard-working insect-pollinator, which you must not touch
  4. 7. You will never see this huge brown animal in winter, because it hibernates