17 Common Cattail Typha latifolia Yellow spike Brown cylinder flower Tall grass-like leaves Cattail are a common wetland plant (meaning they need to have wet-feet (water) to survive. They are nature's sponges and are useful as riparian barriers to help absorb pollutants before they enter the water table. The cylinder (brown fuzzy part) is the female flowering part of the plant and the yellow spike is the male part. Native Americans used this plant to weave baskets and mats out of the leaves. They ate the tuberous roots. They also used the papoose (seeds) as an insulator. Cattails can be a pest as they make a thick monoculture and choke out other species - but provide great habitat for nesting birds.