Cultivated angelicas offering relief (9)
I believe the answer is:
analgesic
'relief' is the definition.
(drug offering pain relief)
'cultivated angelicas' is the wordplay.
'cultivated' indicates an anagram.
'angelicas' anagrammed gives 'ANALGESIC'.
'offering' is the link.
(Other definitions for analgesic that I've seen before include "Pain reliever" , "result is soothing" , "A medicine used to relieve pain" , "Pain-killer" , "number" .)