Giant Reed
Arundo donax
In the Carolinas and Georgia, found in roadsides, waste dumps, other disturbed areas. Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition What its natural habitat tells you
Not native to Louisiana. How scores work Is it native here?
Profile 82%
- Height
- 14–30 feet
- Spread
- 5–9 feet
- Light
- Full sun, Partial shade
- Soil moisture
- Dry to moist
Do not plant. Listed invasive in Louisiana.
Plant this instead
Choose your county to list local plants first.
No recorded swaps for this county. Try the garden finder.
At a glance
- Life cycle
- Perennial
- Leaves
- Deciduous
- Bloom
- January to December
Recorded in 34 Louisiana parishes.
Natural habitats
Places it grows wild. Not a planting requirement. Each habitat page lists the plants and wildlife also found there.
Roadsides, fields and disturbed ground
Ground opened by people: roadsides, old fields, pastures, fencerows and lots.
Who uses this plant?
2CaterpillarsGenus host records with ranges including LA
Genus host records with ranges including LA · Arundo
- Lerema acciusClouded Skipper, Corn Leaf tier
- Mythimna unipunctaArmyworm Moth, White Speck
—BeesSoutheastern regional records
—Specialist beesPollen specialists
—BirdsRecorded genus food-resource interactions; not a state feeding claimPlant details
- Family
- Poaceae
- Hardiness
- Zones 5a–10b
- Flower color
- Brown/copper, gray/silver, pink or red
- Growth rate
- Rapid
- Growth habit
- Spreads by rhizomes
- Foliage color
- Green
Safety has not been reviewed for this plant; check toxicity and thorns before planting.
Growing sources and scope
- Bloom · “September to August” · Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition (ranked first; USDA PLANTS differs) · Carolinas and Georgia
- Flower color · “Brown/copper, gray/silver, pink or red” · NC Extension Plant Toolbox
- Foliage color · “Green” · USDA PLANTS · Nationwide species characteristics; local growing conditions may vary
- Growth habit · “Spreads by rhizomes” · USDA PLANTS · Nationwide species characteristics; local growing conditions may vary
- Growth rate · “Rapid” · USDA PLANTS · Nationwide species characteristics; local growing conditions may vary
- Hardiness · “Zones 5a–10b” · NC Extension Plant Toolbox
- Height · “14–30 feet” · NC Extension Plant Toolbox (ranked first; USDA PLANTS differs)
- Leaf retention · “Deciduous” · USDA PLANTS · Nationwide species characteristics; local growing conditions may vary
- Life cycle · “Perennial” · NC Extension Plant Toolbox
- Light · “Full sun (6 or more hours of direct sunlight a day); Partial shade (direct sunlight only part of the day, 2-6 hours)” · NC Extension Plant Toolbox
- Soil · “Dry; Moist (documented habitat)” · Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition · Carolinas and Georgia
- Spread · “5–9 feet” · NC Extension Plant Toolbox
Conservation status
| Louisiana rank | SNA |
|---|---|
| Global rank | G5 |
| LA status | Not verified |
| Federal status | Not verified |
Sources
- NatureServe Explorer
- USDA PLANTS
- Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition
- Louisiana occurrence source
- Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
- Noori, Seltmann & Orr 2026, A curated and integrated dataset for exploring global bee-plant interactions (GloBI), Zenodo, CC BY 4.0
- Smith, Bachelder, Russell, Morales, Mosher & Seltmann 2024, Bee-Specialization-Modeling v0.6.1 (specialist host table compiled from J. Fowler's pollen specialist bee lists), Zenodo, CC BY 4.0
- Hurlbert, Olsen, Sawyer & Winner 2021, Avian Diet Database, Scientific Data 8: 260 (CC0)
- Narango, Tallamy & Shropshire 2020, Few keystone plant genera support the majority of Lepidoptera species, Nature Communications