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Giant Reed

Arundo donax

Also listed as Arundo latifolia, Arundo versicolor

Also known as Giant Cane, Carrizo Cane, Spanish Reed

grass☀️ full sun💧💧💧 high water❄ Hardy: Zone 7b – Zone 11b

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Giant reed is a tall, bamboo-like perennial grass that grows rapidly along waterways and wetlands, forming dense stands with feathery plumes in fall. It is highly invasive in many regions and difficult to control once established.

Why grow it

Giant reed produces substantial aboveground biomass quickly, which can be useful for erosion control on disturbed sites or for biomass harvesting in contained settings. However, most permaculture practitioners should consider native wetland perennials or bamboo species first, as these offer similar productivity with fewer management complications. University extension services generally recommend native alternatives for riparian zones and wetlands.

Watch out for

Giant reed spreads vigorously through rhizomes and can be difficult to contain without physical barriers or repeated management. Planting should be restricted to areas where spread to waterways or neighboring properties is impossible, and harvest timing matters for preventing re-establishment from broken root fragments.

Overview

Form
Upright
Growth Rate
fast
Size
15–9′ tall × 3–6′ wide
Dormancy
deciduous
Family
Poaceae
biomass/mulcherosion controlfiber

Native Range

Mediterranean and Central Asia

Seasonality

Season of Interest

SummerFall

Notable Cultivars

No widely recognized ornamental cultivars; the species itself is the primary form used in cultivation and biomass production.

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Companion Planting

Plants well with