Pray working gets the writer a flower (7)
I believe the answer is:
begonia
'flower' is the definition.
(I know that Begonia is a type of flower)
'pray working gets the writer a' is the wordplay.
'pray' becomes 'beg' (synonyms).
'working' becomes 'on' (on can mean working or activated).
'gets' means one lot of letters go next to another.
'the writer' becomes 'I' (the person who is writing these clues).
'beg'+'on'+'i'+'a'='BEGONIA'
(Other definitions for begonia that I've seen before include "bloomer" , "Herbaceous plant whose flowers have no petals" , "Common garden plant" , "colourful flower" , "Tropical plant" .)