There are many varieties of bulrush plants. Bulrushes are tall leafless stems growing straight out of the water in large colonies. At the top of each bulrush stem there are clusters of seeds called spikelets. The color of these spikelets are rusty brown and can range from 2 to 15 millimeters in size. The most common bulrush found in Hawaii is the "great bulrush". This naturalized plant grows to the height of 1.5 to 2 meters. They grow in fresh water marsh areas and are also found in brackish water. The seeds of the bulrush plant are eaten by all types of animals including birds, ducks, and fish. The bulrush kills all the native plants by taking all the sun light and taking all the space. So bards can’t nest in the bulrush.