// SPECIES PROFILE · PERENNIAL · NATIVE

Smooth oxeye

Heliopsis helianthoides var. occidentalis

Smooth oxeye (Heliopsis helianthoides var. occidentalis) is a perennial in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2b–9a. Mature size 2'–5'. Blooms Jun–Sep.

// QUICK FACTS

Family: —
Group: perennial
Native range: Native to 41 U.S. states, including AL, AR, CO, CT, DC, DE…
USDA hardiness: Zones 2b–9a
Mature size: 2'–5'
Sun: Part shade
Water: Low · xeric
Bloom: Jun–Sep
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Smooth oxeye (Heliopsis helianthoides var. occidentalis) — *Heliopsis helianthoides var. occidentalis* — Smooth oxeye. Photo via iNaturalist — (c) psweet, some rights reserved (CC BY-SA).

Field Notes

[ growing · ecology · siting · care ]

Smooth oxeye (Heliopsis helianthoides var. occidentalis) is a perennial in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2b–9a. Mature size 2'–5'. Blooms Jun–Sep. Low water use makes it a strong candidate for xeric and drought-conscious plantings.

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, smooth oxeye pairs naturally with: Broadleaf Arrowhead (Sagittaria latifolia), False Sunflower (Heliopsis helianthoides), Lady Fern (Athyrium filix-femina), Wild Strawberry (Fragaria virginiana).