Male teachers don't start getting flowers (6)
I believe the answer is:
asters
'flowers' is the definition.
(aster is a type of flower)
'male teachers don't start' is the wordplay.
'male teachers' becomes 'masters' (I've seen this before).
'don't start' means to remove the first letter.
'masters' with its first letter taken off is 'ASTERS'.
'getting' acts as a link.
(Other definitions for asters that I've seen before include "Daisylike flowers" , "Otherwise known as Michaelmas daisies" , "A rest's a change from flowers" , "Christmas daisies" , "Stares oddly at the flowers" .)