Seashore Dropseed

Where the irrigation water is brackish and the soil is sand, Sporobolus virginicus is one of very few grasses that will still make a sward. It is a low creeping perennial of tropical and subtropical coasts worldwide, spreading by rhizome into a dense mat of stiff blue-green blades.
It has been trialled and used across the Gulf as an amenity and stabilisation turf under saline irrigation, which is the single strongest argument for specifying it.
Seashore Dropseed is the turf answer where salinity is the governing constraint, and there are very few alternatives to it.