White rose cultivated differently (9)
I believe the answer is:
otherwise
'differently' is the definition.
(I know that differently can be written as otherwise)
'white rose cultivated' is the wordplay.
'cultivated' is an anagram indicator.
'white'+'rose'='whiterose'
'whiterose' is an anagram of 'OTHERWISE'.
(Other definitions for otherwise that I've seen before include "White rose (anag.)" , "Under different conditions" , "As an alternative - like white rose" , "White rose seen in a different way" , "Alternatively" .)