Swaziland's Alien Plants Database

Arundo donax L.
Giant reed, Spanish reed
Invasive, Minor problem species
Origin: Southern Europe and Asia
Growth Form: Graminoid
Plant Description: Plant: Large, robust reed 26 m high; rarely branching; spreading from horizontal rootstocks. Leaves: Pale green to bluish-green, up to 700 mm long x 80 mm wide; leaf tips soft or firm, not rigid and penetrating (like Phragmites mauritianus); leaf blades with large, basal ear lobes; leaf sheaths persistent on stem. Flowers: Cream or brown, silky, compact, spear-shaped, 300600 mm long, all year; rarely flowering above 1000 m altitude and then usually adjacent to busy roads. Compare with the indigenous reeds Phragmites mauritianus and P. australis.
Key Features:
Control: cut down to gound level and spay with systemic herbicides
More information:
Plant Conservation Alliance - Alien Plants Fact Sheets
Invasive Alien Plant Species of Virginia
Weeds & Invasive Plants Home Page
NRCS Plants Database

Photo - flowers

Robert H. Mohlenbrock @ USDA-NRCS PLANTS Database / USDA NRCS. 1992. Western wetland flora: Field office guide to plant species. West Region, Sacramento, CA.


USDA-NRCS PLANTS Database / Hitchcock, A.S. (rev. A. Chase). 1950. Manual of the grasses of the United States. USDA Misc. Publ. No. 200. Washington, DC.

Photo - stems

J.S. Peterson @ USDA-NRCS PLANTS Database

Photo - inflorescence

The Weeds Society of Western Australia

map key

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