Imagined new vines getting old (9)
I believe the answer is:
envisaged
'imagined' is the definition.
('envisage' can be a synonym of 'imagine')
'new vines getting old' is the wordplay.
'new' is an anagram indicator.
'getting' is a charade indicator (letters next to each other).
'old' becomes 'aged' (similar in meaning).
'vines' anagrammed gives 'envis'.
'envis'+'aged'='ENVISAGED'
(Other definitions for envisaged that I've seen before include "Pictured" , "Fancied" , "Contemplated" , "Imagined" , "anticipated" .)