English flower for example, good seasonal item (6,3)
I believe the answer is:
easter egg
'seasonal item' is the definition.
(item given in the Easter season)
'english flower for example good' is the wordplay.
'english' becomes 'E' (abbreviation as in OED).
'flower' becomes 'aster' (type of flower).
'for example' becomes 'e.g.' (short for 'exempli gratia', 'for example' in Latin).
'good' becomes 'g' (abbreviation).
'e'+'aster'+'eg'+'g'='EASTER-EGG'
(Other definitions for easter egg that I've seen before include "Segregate from traditional chocolate ovum" , "Candy to celebrate Spring festival" , "Seasonal fare" , "Seasonal confection" , "DVD bonus" .)