|Rose about to open. Nikon D7000|
Most flowers are depicted in their open state, but for roses, it is common to see them both as fully open blooms, or as buds.
The shape of a rose bud is nice, but not any more spectacular than the buds of many other flowers; why it is depicted often in bud form is more for symbology than image.
Being allergic to roses, I quite like them in bud form as I can get closer too them for longer.