Crooked, like gardens (5)
I believe the answer is:
askew
'crooked' is the definition.
(similar in meaning)
'like gardens' is the wordplay.
'like' becomes 'as'.
'gardens' becomes 'kew' (Kew Gardens in London).
'as'+'kew'='ASKEW'
(Other definitions for askew that I've seen before include "Towards one side, awry" , "irregular" , "Oblique" , "Out of line" , "in an odd position" .)