Garner (4)
I believe the answer is:
reap
'garner' is the definition.
(I know that reap is a more specific form of the action garner)
This is all the clue.
(Other definitions for reap that I've seen before include "Harvest (a crop)" , "'As you sow, so shall you . . . .'" , "Cut the corn" , "Use a scythe" , "Cut and gather (crop)" .)