Common Cattails flower from May to July. In early fall, the brown flower head pops open, letting its fluffy seeds emerge. These seeds are carried by wind or water to new places. Relationship to Humans: All parts of the cattail plant are edible. American Indians prepared the different parts in many ways. The leaves of Common Cattail are used to weave baskets, chair seats, and mats. People sometimes plant cattails along the shores of water to prevent erosion. The fluffy seeds are used as insulation for pillows and coats. An adhesive (glue) can be made from the stems. The pollen is sometimes used in fireworks. Photographed at the Ashley Reservoir, Holyoke,MA. Please view large image for full effect.