Blooming time (5)
I believe the answer is:
april
'blooming time' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for april that I've seen before include "Start of the second quarter" , "''All in an ... evening / ... airs were abroad'' (by Katherine Tynan)" , "First month of the year with 30 days" , "Start of the financial year" , "days on end" .)