Flowers in stores (6)
I believe the answer is:
stocks
This clue is a double definition.
'flowers' is the first definition.
(stock is a kind of flower)
'stores' is the second definition.
(I know this)
'in' acts as a link.
(Other definitions for stocks that I've seen before include "Amounts of goods kept by traders" , "bloomers" , "Stores - an old form of punishment" , "heavily-scented flowers" , "Capital holdings often accompanied by shares" .)