Answer: ripening

AnswerCrossword Clue
RIPENINGGetting ready, in a way
RIPENINGComing to maturity
RIPENING" . . . summer's ... breath": Juliet
RIPENINGTurning red, maybe
RIPENINGWhat ethylene may be used for
ripeningRIPEN, to become ripe (fully matured)
ripeningBecome or make ripe