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Giant Reed

Arundo donax

Other Common Names

Giant Cane, Spanish Reed, Carrizo

Plant Category

Grass and Sedge, Perennial

Invasive Description

Giant Reed was introduced from western Asia, northern Africa, and southern Europe in the early 1800s. It is a tall, perennial grass that can grow to over 20 feet tall. Leaves are elongate, 1-2 inches wide and a foot long. The flowers are borne in 2-foot long, dense, white, plume-like panicles during August and September.

Ecological Threat

Giant Reed chokes riversides and stream channels, crowding out native plants and forming monocultures. Due to its rapid growth rate, it can quickly invade and cover an area. It ignites easily and can create intense fires. It alters water flow in riparian habitats. Root and stem fragments float downstream to form new infestations.

Giant Reed is on the Texas Dept. of Agriculture’s list of Noxious Plants which are illegal to sell, distribute or import into Texas.

You may not want or need to replace this invasive plant, but some alternatives are listed below.

How to Eradicate

For information on how to eradicate this invasive, view our statement on herbicide use and preferred alternatives for invasive plants.

Native Alternatives

You can replace this invasive plant with native alternatives. Here are some plants that make superior replacements.

Match your location on the Texas map to the color squares on the replacement plants below to find suitable replacements for your ecoregion.

Click for more details about the ecoregions
Additional Replacement Options: Common Cattail Typha latifolia, Sugarcane Plumegrass Saccharum giganteum, Powdery Thalia Thalia dealbata