Pedagogue loses head and makes a bloomer (5)
I believe the answer is:
aster
'bloomer' is the definition.
(I know that aster is a type of bloomer)
'pedagogue loses head' is the wordplay.
'pedagogue' becomes 'master' (master is a kind of pedagogue).
'loses head' means to remove the first letter.
'master' with its first letter removed is 'ASTER'.
'and makes a' acts as a link.
This may not be right. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for aster that I've seen before include "(Starlike) flower" , "Plant like a Michaelmas daisy" , "Michaelmas daisy genus" , "Tears about bright flower" , "eg Michaelmas daisy" .)