Tree huggers? (5)
I believe the answer is:
vines
'tree huggers?' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for vines that I've seen before include "Plants that climb and twine" , "Grape plants" , "Climbing or trailing plants" , "Grapes grow on them" , "Wine is ultimately the fruit of these" .)