Grass due to receive a bit of manure (6)
I believe the answer is:
inform
'grass' is the definition.
(I've seen this before)
'due to receive a bit of manure' is the wordplay.
'due to receive' becomes 'infor' (eg a region might be in for a cold winter).
'a bit of' indicates taking the first letters.
The first letter of 'manure' is 'm'.
'infor'+'m'='INFORM'
(Other definitions for inform that I've seen before include "Apprise: grass!" , "Grass - doing well" , "Give information to (someone)" , "Enlighten" , "Certify" .)