Popular bouquet (5)
I believe the answer is:
roses
'popular bouquet' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for roses that I've seen before include "Ramblers, for example" , "Flowers of 15th century war" , "Blooms" , "chocolates" , "''. . . . . are red, violets are blue''" .)