Look at unruly garden (6)
I believe the answer is:
gander
'look at' is the definition.
(I've seen this before)
'unruly garden' is the wordplay.
'unruly' indicates anagramming the letters.
'garden' anagrammed gives 'GANDER'.
(Other definitions for gander that I've seen before include "Male bird - look" , "Ranged about with male goose" , "Looking at something - ranged (anag)" , "A butcher's -- bird" , "Butchers - goose" .)