Valentine's Day gift (5)
'valentine's day gift' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for roses that I've seen before include "northern counties, symbolically" , "Flowers, usually red, pink, white or yellow" , "These flowers in one's cheeks usually denote health" , "Beautiful flowers, seen annually in Tralee" , "Occupants of bed" .)
(Another definition for box of chocolates that I've seen is " Suitable present".)