Artificial, some flowers at zoo (6)
I believe the answer is:
ersatz
'artificial' is the definition.
('ersatz' can be similar in meaning to 'artificial')
'some flowers at zoo' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'ERSATZ' is hidden in the letters of 'flowers at zoo'.
(Other definitions for ersatz that I've seen before include "Inferior substitute" , "Phoney as in Germany" , "Imitation (from Ger.)" , "Imitation, not the real thing" , "Bogus" .)