Posted: 22/03/2015 at 13:11
You may be better off asking the farmer to put a wire along the bank to stop the cows grazing the grass/shrubs or worse, using the wall as a scratching place. They can destroy a bank in no time.
They will also pull out small newly planted trees or shrubs. Ensure you don't plant anything toxic to cows - few plants are, but rhodies are.
If the farmer won't co-operate put up your own wire. They will respect it if they think it is electrified.