Flower an officer’s put around Hollywood citizen (7)
I believe the answer is:
alkanet
'flower' is the definition.
(alkanet is a flower)
'an officer's put around hollywood citizen' is the wordplay.
'an' becomes 'a'.
'officer' becomes 'lt' (I've seen this in other clues).
'put around' is an insertion indicator.
'hollywood citizen' becomes 'kane' (as in the film Citizen Kane).
'lt' going around 'kane' is 'lkanet'.
'a'+'lkanet'='ALKANET'
(Other definitions for alkanet that I've seen before include "red dye" , "Plant" , "Herb" .)