Flower girl mad on short daffy (8)
I believe the answer is:
marigold
'flower' is the definition.
(marigold is a kind of flower)
'girl mad on short daffy' is the wordplay.
'short' means to remove the last letter.
'daffy' is an anagram indicator (I've seen this in other clues).
'girl'+'mad'+'on'='girlmadon'
'girlmadon' with its final letter removed is 'girlmado'.
'girlmado' anagrammed gives 'MARIGOLD'.
(Other definitions for marigold that I've seen before include "Orange-flowered plant" , "The flower has a gold rim, oddly" , "floral item" , "Composite plant" , "Yellow or orange flower" .)