Flowering plants Doris arranged around church (7)
I believe the answer is:
orchids
'flowering plants' is the definition.
(orchid is a kind of flowering plant)
'doris arranged around church' is the wordplay.
'arranged' indicates anagramming the letters.
'around' is an insertion indicator.
'church' becomes 'ch' (common abbreviation).
'doris' with letters rearranged gives 'orids'.
'orids' enclosing 'ch' is 'ORCHIDS'.
(Other definitions for orchids that I've seen before include "Chords I turn into flowers" , "Flowers from a rich sod" , "Highly prized plants" , "Fine tropical flowers" , "Glamorous tropical flowers" .)