Ground in Peru is still green (6)
I believe the answer is:
unripe
'still green' is the definition.
(I've seen this in another clue)
'ground in peru' is the wordplay.
'ground' indicates an anagram ('grind' the letters into a new form).
'in'+'peru'='inperu'
'inperu' is an anagram of 'UNRIPE'.
'is' acts as a link.
(Other definitions for unripe that I've seen before include "Immature" , "Not yet mature" , "Not ready for picking" , "Still green?" , "Punier (anag.)" .)