// SPECIES PROFILE · ANNUAL · NATIVE

Marshelder

Iva annua var. annua

Marshelder (Iva annua var. annua) is a annual in the — family. Native range includes AR, KS, MO. Hardy in zones 2b–11b. Blooms Jul–Nov.

// QUICK FACTS

Family: —
Group: annual
Native range: Native to 28 U.S. states, including AL, AR, CO, FL, GA, IA…
USDA hardiness: Zones 2b–11b
Mature size: —
Sun: —
Water: —
Bloom: Jul–Nov
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Marshelder (Iva annua var. annua) — *Iva annua var. annua* — Marshelder. Photo via iNaturalist — (c) Jeff Hansen, some rights reserved (CC BY).

Field Notes

[ growing · ecology · siting · care ]

Marshelder (Iva annua var. annua) is a annual in the — family. Native range includes AR, KS, MO. Hardy in zones 2b–11b. Blooms Jul–Nov.

Why it's on this list: native species profile. Native-range data from the Lady Bird Johnson Wildflower Center (NPIN), cross-checked against iNaturalist observations. Part of Rooted Revival's regional native plant catalog — true natives for Oklahoma, Arkansas, Missouri and Kansas.

Companion Planting

[ guild · polyculture · cross-layer pairings ]

In the same native range, marshelder pairs naturally with: Black-Eyed Susan (Rudbeckia hirta), Common Sunflower (Helianthus annuus), Plains Coreopsis (Coreopsis tinctoria), Swamp verbena (Verbena hastata).