Paspalum vaginatum.

Paspalum vaginatum is a species of grass known by many names, including seashore paspalum, biscuit grass, saltwater couch, silt grass, and swamp couch.
It is native to the Americas, where it grows in tropical and subtropical regions
Paspalum should be watered early in the morning to eliminate any environmental competition.
MOWING Paspalum has a wide range of mowing heights depending on its use.
Paspalum can be maintained as a putting green or as long as 2 inches for a backyard. Decide on a desired length for the turf.
Commonly known as paspalum, bahiagrasses, crowngrasses or dallis grasses, many of the species are tall perennial New World grasses.
They are warm-season C4 grasses and are most diverse in subtropical and tropical regions.