Somewhat neglected, English garden (4)
I believe the answer is:
eden
'garden' is the definition.
(I've seen this in another clue)
'somewhat neglected english' is the wordplay.
'somewhat' indicates a hidden word.
'EDEN' is hidden within 'neglected english'.
(Other definitions for eden that I've seen before include "Foreign Secretary" , "The perfect garden in need" , "Tory Prime Minister, 1955-57" , "Adam and Eve's first home" , "Former British PM - unspoilt paradise" .)