Buzzer beside choir, set off by daughter's bloomer (3,6)
I believe the answer is:
bee orchid
'bloomer' is the definition.
(bee orchid is a kind of flowering plant)
'buzzer beside choir set off by daughter's' is the wordplay.
'buzzer' becomes 'bee' (I've seen this before).
'beside' means one lot of letters go next to another (I've seen this in other clues).
'set off' indicates anagramming the letters.
'by' means one lot of letters go next to another.
'daughter' becomes 'd'.
'choir' is an anagram of 'orchi'.
'bee'+'orchi'+'d'='BEE ORCHID'
(Another definition for bee orchid that I've seen is " Plant with flower mimicking an insect".)