Arundo donax

Arundo donax_Giant reed_ JM Di Tomaso
Photo courtesy Joseph DiTomaso

Common names: giant reed

Arundo donax (giant reed) is a tall perennial grass (family Poaceae) that typically
forms dense stands on disturbed sites, sand dunes, riparian areas, and wetlands. It has invaded central California River valleys in San Luis Obispo and Monterey counties, the San Francisco Bay Area, the Sacramento and San Joaquin River valleys and is also increasing in the North Coast region. Arundo donax is threatening California’s riparian ecosystems by outcompeting native species, such as willows, for water.

Cal-IPC Rating: High

Cal-IPC Assessment

Plant Assessment Form - Information gathered by Cal-IPC on the impacts, rate of spread, and distribution of invasive plants in California. Does not include management information.

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