Thamnochortus insignis, commonly known as Thatching Reed, is an evergreen perennial grass native to the coastal and montane fynbos regions of the Western Cape in South Africa. This species thrives in a Mediterranean climate, characterized by wet winters and dry summers. It forms tall, grass- or reed-like tussocks with a diameter of 500 mm to 1 meter at the base and can reach up to 2.5 meters in height, with a spread of 3 meters or more at the top. The plant’s appearance is defined by its upright, stiff culms and the striking architectural form it provides. Male and female plants are separate (dioecious) and appear very similar when not in flower. The male inflorescences are small tassels that sway in the wind, aiding in wind pollination, while the female flowers are subtended by medium-sized bracts that capture airborne pollen, directing it toward the fringed styles of the female flowers. After pollination, the seed develops into a tiny nutlet with two small wings, facilitating dispersal by wind.

Thatching Reed is valued for its ornamental qualities, including its unique form and texture, which add a dramatic effect to garden landscapes. It is also historically significant for its use as a thatching material. In cultivation, Thatching Reed is suitable for urban planting, border planting, and as a focal point in large containers. It is hardy to -3 °C and can be established outdoors in mild regions. The plant prefers full sun exposure, requires low amounts of water, and thrives in soils with medium drainage. While it is excellent in pots, it can also be used in mass plantings for a bold visual impact.CC BY-SA 4.0