// SPECIES PROFILE · PERENNIAL · NATIVE

Ragweed

Ambrosia × helenae

Ragweed (Ambrosia × helenae) is a perennial in the — family. Native range includes AR — verified against the Lady Bird Johnson Wildflower Center native distribution database. Hardy in zones 3a–8a.

// QUICK FACTS

Family: —
Group: perennial
Native range: Native to AR, CT, IA, IL, MI, NY, OH
USDA hardiness: Zones 3a–8a
Mature size: —
Sun: —
Water: —
Bloom: —
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Ragweed (Ambrosia × helenae) — *Ambrosia × helenae* — Ragweed. Photo via iNaturalist — (c) Matt Berger, some rights reserved (CC BY).

Field Notes

[ growing · ecology · siting · care ]

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, ragweed pairs naturally with: American Lotus (Nelumbo lutea), Broadleaf Arrowhead (Sagittaria latifolia), Blue-Eyed Grass (Sisyrinchium angustifolium), Butterfly Milkweed (Asclepias tuberosa).