Wild European garden given makeover (7)
I believe the answer is:
enraged
'wild' is the definition.
(I've seen this before)
'european garden given makeover' is the wordplay.
'european' becomes 'E' (abbreviation e.g. EU).
'given' means one lot of letters go next to another.
'makeover' indicates anagramming the letters (I've seen this in other clues).
'e' put after 'garden' is 'gardene'.
'gardene' anagrammed gives 'ENRAGED'.
(Other definitions for enraged that I've seen before include "Maddened" , "Greatly angered" , "Angered (anag) - extremely so!" , "Infuriated, made mad" , "on the warpath?" .)