plants and politics

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Across
  1. 1. part of the plant that is its "backbone"
  2. 3. hard to detect
  3. 5. (plural) mushroom, like truffles for example
  4. 7. stop beating about the ... and be straight with me
  5. 10. native
  6. 11. to suppress something when it only starts: nip it in the ...
  7. 12. poisonous
Down
  1. 1. what you sow to grow a new plant
  2. 2. a very clever and innovative idea
  3. 4. very quiet or relaxed
  4. 6. plural forms of cactus
  5. 8. what Socrates was poisoned with
  6. 9. part of the plant that people and animals often eat