Wife leaving layabout, one often found in bed? (5)
I believe the answer is:
aster
'one often found in bed?' is the definition.
(flower that might be found in a flower bed)
'wife leaving layabout' is the wordplay.
'wife' becomes 'w'.
'leaving' is a deletion indicator.
'layabout' becomes 'waster' (I've seen this before).
'waster' with 'w' taken away is 'ASTER'.
(Other definitions for aster that I've seen before include "Tears (anag) - plant" , "Kind of daisy" , "Tears about bright flower" , "Garden plant" , "Flowering plant; tares (anag.)" .)