Entire yard in shade - no grass grows
There are turf grasses that tolerate some shade: Buffalograss, St. Augustine grass, Kentucky bluegrass and Fescues all tolerate some shade. But if your yard is completely shaded, then perhaps a traditional turf lawn isn't the best choice for your yard. There are ornamental grasses, groundcovers and shade-loving perennnials that tolerate some foot traffic and will make your yard look wonderful. Check with your local county extension service for the best choices.