Angry head's corrected bloomers (10)
I believe the answer is:
hydrangeas
'bloomers' is the definition.
(blooming plants)
'angry head's corrected' is the wordplay.
'corrected' is an anagram indicator.
'angry'+'heads'='angryheads'
'angryheads' with letters rearranged gives 'HYDRANGEAS'.
(Other definitions for hydrangeas that I've seen before include "Garden shrubs" , "Flowering plants; ashy garden (anag.)" .)