Chimonobambusa quadrangularis, commonly known as Square Bamboo, is an evergreen perennial grass native to forested regions and mountain slopes of Southeast Asia, particularly in Taiwan and Japan. It is distinctive for its square-shaped stems, a rare trait among bamboos, and can grow to a height of 10-20 feet (3-6.1 meters) with a very narrow spread of about 0.1 feet (0.03 meters). The plant features delicate, lance-shaped leaves and, although it rarely flowers, when it does, the blooms are inconspicuous.

Square Bamboo is valued for its unique geometric stem shape and lush foliage, making it a striking ornamental feature in gardens. It is often used as a specimen plant or in Asian-themed garden designs. In cultivation, it requires full sun to part shade and consistent moisture, but is adaptable to a range of soil types, provided they have good drainage. While it is not as invasive as some other bamboos, it can spread if not contained, and it is recommended to plant it in a barrier to prevent unwanted expansion. It is relatively low-maintenance but may require occasional thinning to maintain its shape and vigor.CC BY-SA 4.0