Wretched, being out in the garden (8)
I believe the answer is:
blooming
This clue is a double definition.
'wretched' is the first definition.
(both are mild swear words used for emphasis)
'being out in the garden' is the second definition.
(flowers which have bloomed are 'out')
(Other definitions for blooming that I've seen before include "Healthy -- flowering" , "Looking healthy" , "Blossoming" , "Euphemistic expletive - in flower" .)