[3] Bolboschoenus planiculmis is a perennial clonal plant with a height of 20–100 centimeters that reproduces both sexually through seeds and asexually through vegetative propagation.

Although it is a glycophyte, B. planiculmis was found to be more salt-tolerant than other freshwater species, as is consistent with its propagation in saline habitats, alkaline water, and mineral-rich substrates.

[5] Like many Bolboschoenus species, it is commonly distributed in saline wetlands and occupies a wide variety of habitats in both coastal and inland salt marshes; it adapts easily and well to both temporarily flood terrestrial areas as well as long-term dry periods in the form of dormant underground tubers.

[7] In South Korea along the Nakdong River Estuary, B. planiculmis tubers are a major food for swan geese and other migratory waterfowl.

[9] An et al. (2021) found in observational trials that the optimum water depth for B. planiculmis growth and reproduction was 11.2–36.1 cm.