Season not starting with deposit in earth (5)
I believe the answer is:
inter
'deposit in earth' is the definition.
(to place a corpse in a grave)
'season not starting' is the wordplay.
'season' becomes 'winter' (winter is a season).
'not starting' means to remove the first letter.
'winter' with its first letter taken off is 'INTER'.
'with' is the link.
(Other definitions for inter that I've seen before include "Plant" , "Settle in ground" , "Put into the ground" , "Football Club at home in San Siro" , "an Italian soccer team?" .)