A bloomer, I'd say, in a way (5)
I believe the answer is:
daisy
'a bloomer' is the definition.
(daisy is a kind of flowering plant)
'i'd say in a way' is the wordplay.
'in a way' indicates an anagram.
'id'+'say'='idsay'
'idsay' anagrammed gives 'DAISY'.
(Other definitions for daisy that I've seen before include "bloomer" , "Lawn flower, weed" , "girl" , "Grassland plant" , "Flower of lawn and meadow" .)