Farm strips not too bad, compared with Red Lion Airport down in the pine woods in New Jersey.....the problem there is that the airport is closely surrounded on ALL SIDES by tall trees. So you are coming down the approach with a headwind, which when you get low vanishes altogether and is useless for tempering the touchdown speed. Or you take off and just above the awkward height discover that there is a howling wind dead cross. At least the electric wires at the ends of the runway are festooned with a couple of conspicuous red plastic balls.
Landing in a farm field is routine for gliders. But I did manage to get it wrong flying a Raleigh Minerva into a farm strip; the strip was just a tad short and I ended up nosed over in the turnips. Fortunately no damage. Nice soft mud.