Row of bushes in verge below hospital (5)
I believe the answer is:
hedge
'row of bushes' is the definition.
(I've seen this before)
'verge below hospital' is the wordplay.
'verge' becomes 'edge' (I've seen this before).
'below' is a charade indicator (letters next to each other).
'hospital' becomes 'h'.
'edge' put after 'h' is 'HEDGE'.
'in' acts as a link.
(Other definitions for hedge that I've seen before include "appear non-committal in statement" , "Shrub boundary fence" , "Border of vegetation" , "Avoid making a definite commitment" , "Shrubby boundary" .)