Plant, say, with method trapping insect (9)
I believe the answer is:
eglantine
'plant' is the definition.
(I know that eglantine is a type of rose)
'say with method trapping insect' is the wordplay.
'say' becomes 'eg' (both can mean 'for example').
'with' is a charade indicator (letters next to each other).
'method' becomes 'line' (I can't explain this - if you can you should give a lot more credence to this answer).
'trapping' is an insertion indicator.
'insect' becomes 'ant' (ant is a kind of insect).
'line' enclosing 'ant' is 'lantine'.
'eg'+'lantine'='EGLANTINE'
Can you help me to learn more?
(Other definitions for eglantine that I've seen before include "Inelegant (anag) - plant" , "Strangely inelegant scented plant" , "Sweetbriar, inelegant in a way" , "Milton's honeysuckle" , "Sweet brier" .)