Where dominant, saltwater couch (Sporobolus virginicus) is an indicator of good pasture condition. It decreases under heavy grazing pressure.
Saltwater couch is highly palatable to livestock.
Saltwater couch is a creeping perennial grass that can grow to 30cm tall. New plants usually develop from runners or underground stems. The leaves are 2–10cm long, 1–2mm wide and are sharply pointed at the ends. The seed head is linear, 2–10cm long and 6–8mm wide on long stems.