I'd love to plant regular plants that would be a natural wind block. I have a large plant on one side (rhodendrum) that when it gets bigger will provide shade and wind protection on the west side of the coop. I don't think the hostas, lilys & spearmint will do much as a wind block but it will provide some shade once they grow a little more. I am not a big fan of bushes tho they would make a great wind break.We get plenty of wind too... flat country with nothing to stop it let alone slow it down.