"The garden of England" (4)
I believe the answer is:
kent
'the garden of england' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for kent that I've seen before include "Canterbury's county" , "Garden of England - Superman's family name" , "Earl Lear banishes" , "County; punting pole" , "Knew (Scottish)" .)