2. We cannot say for certain what these bulrushes were used for; they were sometimes used for roofing, and the seed heads could serve as a filling material for beds. See Dijk and Van der Sluis, 2001, pp. 175-176. Some sources say that the leaves of the bulrush can be used for weaving mats, baskets and chair seats, and are also good for caulking and stopping cracks in barrels and boats because of their ability to swell when wet.
Encyclopedia Britannica moreover states: ‘Cattails [bulrushes] have been called the most useful of all wild plants as sources of emergency food. The rootstocks, for example, are the source of an edible starch, the young stems are edible as salad plants or vegetables. Even the immature, still-green flowering spikes can be boiled and eaten like corn on the cob.’