Plant releases indelicate aroma to start with (7)
I believe the answer is:
freesia
'plant' is the definition.
The answer is an example.
'releases indelicate aroma to start with' is the wordplay.
'releases' becomes 'frees' ('free' can be a synonym of 'release').
'to start with' indicates taking the first letters.
The first letters of 'indelicate aroma' is 'ia'.
'frees'+'ia'='FREESIA'
(Other definitions for freesia that I've seen before include "Scented South African plant" , "Is the sea rife with these strange flowers?" , "Fragrant flower (sounds rather cold?)" , "Scented plant from South Africa" , "bloomer" .)