Florist's container (4)
I believe the answer is:
vase
'florist's container' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for vase that I've seen before include "Flower container - save it" , "Open jar for holding flowers" , "Flower-display holder" , "Cut-flower container" , "Container for cut flowers" .)