North Surrey - crude place for cultivation (7)
I believe the answer is:
nursery
'place for cultivation' is the definition.
(I've seen this before)
'north surrey crude' is the wordplay.
'north' becomes 'N' (abbreviation).
'crude' is an anagram indicator.
'surrey' is an anagram of 'ursery'.
'n'+'ursery'='NURSERY'
(Other definitions for nursery that I've seen before include "where small fry are found" , "Preschool for small children" , "Creche" , "Room for 1dn" , "cannon" .)