Overturned lush plant again (5)
I believe the answer is:
repot
'plant again' is the definition.
('pot' is an answer for 'plant' so perhaps 'repot' is OK for 'plant again')
'overturned lush' is the wordplay.
'overturned' says the letters should be written in reverse.
'lush' becomes 'toper' (both can mean an alcoholic).
'toper' backwards is 'REPOT'.
(Other definitions for repot that I've seen before include "transfer seedlings" , "to fit into new container" , "Transplant" , "Move plant" , "plant in another location" .)