Annual Marsh-elder
Iva annua
Found in fields, especially bottomlands, disturbed places; in the eastern and inland part of area probably introduced (by native Americans) from farther west. Weakley, Flora of the Southeastern United States (2025), Northern Tier edition What its natural habitat tells you
Native status: sources disagree, under review. How scores work Is it native here?
Profile 71%
- Height
- Up to about 5 feet
- Light
- Partial shade, Full sun
- Soil moisture
- Dry to wet
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At a glance
- Life cycle
- Annual
- Bloom
- August to November
Not yet recorded · Spread · Leaves
County records are not available.
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.
Floodplain and bottomland forests
Forests on low ground beside rivers and streams that flood from time to time.
Who uses this plant?
1CaterpillarsGenus host records with ranges including WV
Genus host records with ranges including WV · Iva
- Schinia gracilentaIva Flower Moth, Slender Flower Moth
—BeesSoutheastern regional records
—Specialist beesPollen specialists
4BirdsRecorded genus food-resource interactions; not a state feeding claim
Recorded genus food-resource interactions; not a state feeding claim · Iva
- Callipepla californicaCalifornia Quail
- Columbina passerinaCommon Ground Dove
- Peucaea aestivalisBachman's Sparrow
- Spizella passerinaChipping Sparrow
Direct food only: birds recorded eating this genus across North America. Caterpillars on host plants also feed nesting birds. NC Native Plant Society: butterfly gardening
Plant details
- Family
- Asteraceae
- Flower color
- Yellow or green
Safety has not been reviewed for this plant; check toxicity and thorns before planting.
Growing sources and scope
- Bloom · “August to November” · Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition · Carolinas and Georgia
- Flower color · “Yellow or green” · Lady Bird Johnson Wildflower Center
- Height · “Up to about 5 feet” · Lady Bird Johnson Wildflower Center
- Life cycle · “Annual” · Lady Bird Johnson Wildflower Center
- Light · “Partial shade; Full sun (documented habitat)” · Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition · Carolinas and Georgia
- Soil · “Dry; Moist; Wet (documented habitat)” · Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition · Carolinas and Georgia
Also known as
Annual Marsh elder; Marsh Elder; Sumpweed
Conservation status
| West Virginia rank | SNA |
|---|---|
| Global rank | G5 |
| WV status | Not verified |
| Federal status | Not verified |
Will it fit your yard?
Check this plant against your county, sun and soil moisture. Conditions are checked in your browser.
Sources
- NatureServe Explorer
- USDA PLANTS
- Weakley, Flora of the Southeastern United States (2025)
- West Virginia 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