Spring bloomers (6)
I believe the answer is:
tulips
'spring bloomers' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for tulips that I've seen before include "plants" , "Garden flowers, musically from Amsterdam" , "Pretty flowers, musically from Amsterdam" , "Slit up the Spring flowers" , "Flowering bulbs" .)