Why can't you buy St. Augustine grass seeds?

St. Augustine grass seeds are not available for purchase due to the fact that they rarely grow into vegetation. Because this grass rarely produces viable seeds, those wishing to grow it should begin the process by laying sod or planting stolons or plugs of the grass.

St. Augustine grass is a rough-textured grass that grows well in moderate to tropical temperatures. It grows by using stolons to produce more grass. This grass species has a high salt tolerance, which makes it well-suited for coastal areas such as Florida, where it is very common. St. Augustine grass is primarily planted on home and business lawns.