Horseradish
Armoracia rusticana
In the Carolinas and Georgia, found in roadsides, fields and disturbed ground; streams, rivers and their banks. 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
- 2–5 feet
- Spread
- 2.5–4 feet
- Light
- Full sun, Partial shade
- Soil moisture
- Usually moist

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At a glance
- Life cycle
- Perennial
- Bloom
- March to July
Not yet recorded · Leaves
Recorded in 1 Louisiana parish.
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.
Streams, rivers and their banks
Flowing water and its banks, bars and rocky shoals.
Who uses this plant?
3CaterpillarsGenus host records with ranges including LA
Genus host records with ranges including LA · Armoracia
- Ascia monusteGreat Southern White
- Hellula rogatalisCabbage Webworm
- Lascoria ambigualisAmbiguous Moth, Ambiguous Litter Moth
Plant details
- Family
- Brassicaceae
- Hardiness
- Zones 4a–9b
- Soil pH
- Acidic to alkaline
- Flower color
- White
Safety has not been reviewed for this plant; check toxicity and thorns before planting.
Growing sources and scope
- Bloom · “March to July” · Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition · Carolinas and Georgia
- Flower color · “White” · NC Extension Plant Toolbox
- Hardiness · “Zones 4a–9b” · NC Extension Plant Toolbox
- Height · “2–5 feet” · NC Extension Plant Toolbox (ranked first; Minnesota Wildflowers differs)
- 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
- primary_flower_color · “white” · NC Extension Plant Toolbox
- Soil · “Moist” · NC Extension Plant Toolbox
- Soil pH · “Acidic to alkaline” · NC Extension Plant Toolbox
- Spread · “2.5–4 feet” · NC Extension Plant Toolbox
Also known as
Horse Radish
Conservation status
| Louisiana rank | SNA |
|---|---|
| Global rank | GNR |
| 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


