What is cattail?

What is cattail? Pucao is a kind of herb. He usually grows in water. It grows in ponds, ditches, swamps and streams, and is buffered by lakes and rivers. This kind that grows in this area is called cattail. He is also widely distributed. . Pucao can also be eaten. The leaves of cattail can be woven into shoes and fans. Baskets, mats and mats. This is a kind of handicraft that we often see in the street. Because its leaves are soft. It has the function of moistureproof. But now people seldom use it. Made up something.