Description

• Arundo donax, commonly known as giant reed or Spanish reed, is a tall, perennial grass in the grass family (Poaceae). It grows in dense clumps from thick, creeping rhizomes and can reach heights of 2–6 m or more. Its stout, hollow stems resemble bamboo, while its long, broad, grey-green leaves clasp the stems. Large, feathery flower plumes develop at the stem tips, usually purplish or greenish when young and becoming pale and fluffy as they mature.

Range

• Arundo donax is generally considered native to parts of Asia and the Mediterranean region, although its original range is uncertain. It has been introduced widely and is naturalized in many warm regions, including Mexico. It occurs in Zihuatanejo, Guerrero, and the surrounding area.

Habitat

• Giant reed commonly grows along rivers, streams, drainage channels, wetlands, and irrigation ditches, favouring moist soils and sunny locations. It can tolerate seasonal drought once established and spreads vigorously through its rhizomes, forming dense stands that may displace native vegetation, particularly in riparian habitats.