1. Gardening Knack.     Green thumb

  2. BONANZA Star.     Lorne Greene

  3. Go-ahead sign.     Green light

  4. Large island near Iceland.     Greenland

  5. Kato's comic strip boss.     The Green Hornet

  6. "Ho ho ho" man of ads.     Green Giant

  7. Fir.     Evergreen

  8. Eddie Albert / Eva Gabor Show.     Green Acres

  9. Glass-sided building.     Greenhouse

  10. "What Child is This?" tune.     Greensleeves

  11. Pro Football team.     Green Bay Packers

  12. Jealousy.     Green-eyed monster or Green with envy

  13. Special military forces.     Green Berets

  14. Ethan Allen's group.     Green Mountain Boys

  15. City of Kentucky.     Bowling Green

  16. Legal tender note.     Greenback

  17. Inexperienced beginner.     Greenhorn

  18. Noted Steeler lineman.     Mean Joe Greene