Typha latifolia is an “obligate wetland” species, meaning that it is always found in or near water. The species generally grows in flooded areas where the water depth does not exceed 2.6 feet (0.8 meters). However, it has also been reported growing in floating mats in slightly deeper water. T. latifolia grows mostly in fresh water but also occurs in slightly brackish marshes. The species can displace other species native to salt marshes upon reduction in salinity. Under such conditions the plant may be considered invasive, since it interferes with preservation of the salt marsh habitat.
The plant is 1.5 to 3 metres (5 to 10 feet) high and it has 2–4 cm (¾ to 1½ inch) broad leaves, and will generally grow out in to 0.75 to 1 metre (2 to 3 feet) of water depth.