All answers are trees or shrubs
31. TRAVELLING ON FOOT (9)
40. PROMPT FOR BOTTOM (6)
43. WITH WOL'S "KEEP OUT" (6)
45. NOT THE BEST AREA (5)
48. FOR GOLDEN ARCHES (BUT NOT BIG MACS) (8)
50. GRADUATE OLD BOY WITH SAILOR (6)
56. HEAD TO THE BOUNDARY- ALMOST (6)
Original questions asked in capitals. Thanks for any help.