Need wilder garden (4)
I believe the answer is:
eden
'garden' is the definition.
(I've seen this before)
'need wilder' is the wordplay.
'wilder' is an anagram indicator.
'need' with letters rearranged gives 'EDEN'.
(Other definitions for eden that I've seen before include "In need of a great garden" , "Old PM" , "5,27 [PRIME MINISTER]" , "Cornish garden; paradise" , "Need an odd garden?" .)