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Arundo donax

Giant reed

Photographer: J. Miller
Source: Invasive Plants of the Eastern United States


Giant reed is a tall, perennial grass that can grow to over 20 feet in height. Its fleshy, creeping rootstocks form compact masses from which tough, fibrous roots emerge that penetrate deeply into the soil. Leaves are elongate, 1-2 inches wide and a foot long. The flowers are borne in 2-foot long, dense, plume-like panicles during August and September.

Photographer: Leslie J. Mehrhoff, University of Connecticut,

Note the large leaves, with auricles (several indicated by the arrows).

Photographer: Rebekah D. Wallace, University of Georgia,

Showing the growth form and the flower/seedheads.