New Hampshire state flower (5)
I believe the answer is:
lilac
'new hampshire state flower' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for lilac that I've seen before include "Fragrant shrub; colour" , "Pinkish purple - shrub" , "Shrub with fragrant purplish or white flowers" , "Fragrant,purple flower" , "Shrub or small tree with fragrant blossom" .)