Rose perhaps wants social worker kept in line (9)
I believe the answer is:
eglantine
'rose' is the definition.
(eglantine is a kind of rose)
'perhaps wants social worker kept in line' is the wordplay.
'perhaps' becomes 'eg' (for example).
'wants' says to put letters next to each other.
'social worker' becomes 'ant' (I've seen this before).
'kept in' indicates putting letters inside.
'ant' going into 'line' is 'lantine'.
'eg'+'lantine'='EGLANTINE'
(Other definitions for eglantine that I've seen before include "Strangely inelegant scented plant" , "Inelegant (anag) - plant" , "Sweet brier" , "Inelegant (anag.); wild rose" , "Milton's honeysuckle" .)