Tule ("Schoenoplectus acutus" also called bulrushes) have a thin (~1 cm or 0.5 inch) diameter, rounded green stems that grows to 1 to 3 metres (3–10 ft) tall. They grow well in marshes, wetlands or at the edges of bodies of water. The tule stem has a pithy interior filled with spongy tissue packed with air cells—this makes it float well on water as well as a good insulator. Native Americans used tule for making and thatching huts, baskets, mats, boats, decoys, hats, clothing and shoes. Tule was typically cut using deer scapula 'saws' that had rough saw like edges cut into them. Tule has to be handled with care when green to avoid breaking the stem and gains strength when it is partially dried.