All flat reeds, grasses and agave have been woven into useful items since time immemorial
Tall slender grasses that grow in water, marshes, wetlands or swamps and have hollow stems. When cut and dried, they can be used for thatching, to stuff mattresses, and woven into baskets, rugs and mats, window blinds, door covers and to cover dirt floors; similar to and sometimes called rush matting.