Daisy Duck getting cross, I heard (5)
I believe the answer is:
oxeye
'daisy' is the definition.
(I've seen this before)
'duck getting cross i heard' is the wordplay.
'duck' becomes 'o' (resembles zero - 'duck' in cricket).
'getting' is a charade indicator (letters next to each other).
'cross' becomes 'x' (an X is a cross).
'heard' shows a homophone (sound like).
'i' is a homophone of 'eye'.
'o'+'x'+'eye'='OXEYE'
(Other definitions for oxeye that I've seen before include "Daisy plant" , "Plant with daisy-like flowers" , "White and yellow daisy" , "Wild daisy" , "Flowering herb" .)