Incense - a green variety (6)
I believe the answer is:
enrage
'incense' is the definition.
(I've seen this before)
'a green variety' is the wordplay.
'variety' is an anagram indicator.
'a'+'green'='agreen'
'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" .)