// SPECIES PROFILE · ANNUAL · NATIVE

Annual marsh elder

Iva annua var. macrocarpa

Annual marsh elder (Iva annua var. macrocarpa) is a annual in the — family. Native range includes AR, MO. Hardy in zones 5a–8a. Blooms Jul–Nov.

// QUICK FACTS

Family: —
Group: annual
Native range: Native to AR, KY, MO
USDA hardiness: Zones 5a–8a
Mature size: —
Sun: —
Water: —
Bloom: Jul–Nov
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

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

Field Notes

[ growing · ecology · siting · care ]

Annual marsh elder (Iva annua var. macrocarpa) is a annual in the — family. Native range includes AR, MO. Hardy in zones 5a–8a. 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, annual marsh elder pairs naturally with: Black-Eyed Susan (Rudbeckia hirta), Common Sunflower (Helianthus annuus), Lemon Beebalm (Monarda citriodora), Plains Coreopsis (Coreopsis tinctoria).