Wife, flowery type, who squanders things? (6)
I believe the answer is:
waster
'who squanders things?' is the definition.
(someone who wastes or squanders)
'wife flowery type' is the wordplay.
'wife' becomes 'w'.
'flowery type' becomes 'aster' (aster is a type of flower).
'w'+'aster'='WASTER'
(Other definitions for waster that I've seen before include "Ne'er do well, profligate" , "Layabout" , "Prodigal" , "Person doing nothing of value (colloq.)" , "Profligate in stormy waters" .)