Tussock grass refers to a group of perennial grasses that grow in dense clumps or tufts, commonly found in wetlands and grasslands. These grasses are characterized by their thick, upright stems and can reach heights of up to 1.5 meters. Tussock grasses play a vital role in their ecosystems by providing habitat for various wildlife and helping to stabilize soil. Common species of tussock grass include Poa tussock and Chionochloa, which are native to regions like New Zealand and Australia. They thrive in areas with moderate rainfall and can tolerate a range of soil types. Tussock grasses are also important for preventing erosion and maintaining water quality in their habitats.