You can divide South Carolina into two geographical regions; Western (NE) half is "Piedmont" and Eastern (SE) half is Coastal areas. The western part of Coastal area adjoining the Piedmont is often called "Sandhills".
Bermudagrass & Centipedegrass and Zoysia are used throughout the state. Bahiagrass is often planted in coastal plains areas and is especially adapted for the poor soils of Sandhills region. St. Augustine is also used, especially in coastal areas of the state. Carpetgrass can be used in moist areas. Tall Fescue should be limited in use to the more cooler / Northeastern areas of the state due to its in-tolerance to high summer temperatures. Ryegrasses are normally used to overseed Bermudagrass throughout the state.
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Promoting healthy growth and avoiding conditions that cause stress to your turfgrass is the best way to prevent a severe disease outbreak. Stressed lawns are an open invitation for a lawn disease to gain a foothold. Optimal maintenance practices are the best way of avoiding stressed turfgrass.
Even if a pathogen is present in the soil, infection will not occur unless the environmental conditions are conducive to disease development. Once turf diseases have become active, they can cause heavy damage if not treated properly. Here is a list of common diseases to South Carolina lawns: