Asian plant in European town ultimately (7)
I believe the answer is:
eastern
'asian' is the definition.
(similar in meaning)
'plant in european town ultimately' is the wordplay.
'plant' becomes 'aster' (aster is a kind of plant).
'in' indicates putting letters inside.
'european' becomes 'e' (abbreviation e.g. EU).
'ultimately' indicates one should take the final letters.
The final letter of 'town' is 'n'.
'e'+'n'='en'
'aster' inserted inside 'en' is 'EASTERN'.
(Other definitions for eastern that I've seen before include "China?" , "Maybe Chinese" , "Chinese', for example" , "Indian perhaps" , "towards the sun" .)