Aromatherapy source still popular with doctor, having edge on treatment of sore (7,8)
I believe the answer is:
evening primrose
'treatment of sore' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.
'aromatherapy source still popular with doctor having edge' is the wordplay.
I cannot really understand how this works, but
'still' could be 'even' (synonyms) and 'even' is located in the answer.
'popular' could be 'in' (something that's 'in' is fashionable) and 'in' is found in the answer.
'doctor' could be 'gp' (general practitioner) and 'gp' is present in the answer.
'edge' could be 'rim' (rim is a kind of edge) and 'rim' is found in the answer.
The remaining letters 'rose' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'on' acts as a link.
Can you help me to learn more?
(Other definitions for evening primrose that I've seen before include "Herbal remedy" , "type of oil" , "Plant with pale yellow flowers" , "plant that flowers at night" , "source of oil" .)