Fragrant plant, a healer they say? (5)
I believe the answer is:
thyme
'fragrant plant' is the definition.
(I know this)
'a healer they say?' is the wordplay.
'a healer' becomes 'time' ('time is the great healer').
'they say?' indicates a 'sounds like' (homophone) clue.
'time' sounds like 'THYME'.
(Other definitions for thyme that I've seen before include "something fragrant?" , "Aromatic ingredient" , "Sage's bedmate" , "Herb used in cooking as seasoning" , "Seasoning plant" .)