We get this question a lot. Seville, Sapphire, Palmetto, and Bitter Blue St Augustine all will TAKE some light shade, but this is not what any turf grass prefers and these varieties will thrive in the full sun as well. The best way I can put this is that our sod field where we grow shade tolerant St Augustine are not covered in trees or grown in greenhouses. They are wide open full sun fields. So there is no need to sod part of your yard in a “sun” variety of St Augustine and the remainder in a shade tolerant type. Be careful as well using these types of grasses in heavy shade as they can only take light amounts of shade. We see other sod companies putting grass in heavy shade and it is not a good idea. We tell our customers if it is too shady plant a ground cover or simply mulch the area.