Incense - a green variety (6)
I believe the answer is:
'incense' is the definition.
(I've seen this before)
'a green variety' is the wordplay.
'variety' is an anagram indicator.
'agreen' with letters rearranged gives 'ENRAGE'.
(Other definitions for enrage that I've seen before include "put people's back up" , "Make mad" , "Incense" , "Make violently angry" , "Make someone extremely angry" .)