Eurasian rose, say, worker planted in row (9)
I believe the answer is:
eglantine
'eurasian rose' is the definition.
'eglantine' can be an answer for 'rose' (eglantine is a kind of rose). I'm not sure about the 'eurasian' bit.
'say worker planted in row' is the wordplay.
'say' becomes 'eg' (both can mean for example).
'worker' becomes 'ant' (worker is a type of ant).
'planted in' means one lot of letters goes inside another.
'row' becomes 'line' (as in a row of things).
'ant' inserted within 'line' is 'lantine'.
'eg'+'lantine'='EGLANTINE'
Can you help me to learn more?
(Other definitions for eglantine that I've seen before include "Sweet brier" , "Strangely inelegant scented plant" , "Inelegant sort of sweet-brier" , "Inelegant (anag) - plant" , "Sweetbriar, inelegant in a way" .)