Zizaniopsis miliacea is a species of flowering plant in the grass family, Poaceae.

[2] It is known by the common names giant cutgrass, water millet, and southern wildrice.

[3] It is native to the southeastern United States and it can also be found in central Mexico.

[4] This perennial grass grows from rhizomes, producing stems up to 4 meters tall and 3.5 centimeters wide.

[3] This grass forms large colonies by spreading via its stolon-like stems and rhizomes.