Flower prepared to live (6)
I believe the answer is:
violet
'flower' is the definition.
(I've seen this before)
'prepared to live' is the wordplay.
'prepared' is an anagram indicator.
'to'+'live'='tolive'
'tolive' with letters rearranged gives 'VIOLET'.
(Other definitions for violet that I've seen before include "See 9" , "Reddish blue colour" , "Girl's name - colour" , "Shade of purple" , "Five-petalled flower" .)