Bloomer Stalin movie corrected (4-2-1-4)
I believe the answer is:
love-in-a-mist
'bloomer' is the definition.
(love-in-a-mist is a kind of flowering plant)
'stalin movie corrected' is the wordplay.
'corrected' indicates anagramming the letters.
'stalin'+'movie'='stalinmovie'
'stalinmovie' is an anagram of 'LOVE-IN-A-MIST'.
(Other definitions for love-in-a-mist that I've seen before include "Nigella" , "Buttercup relative" , "Plant with blue flowers amid greenery" .)