// SPECIES PROFILE · PERENNIAL · NATIVE

Curtiss' yelloweyed grass

Xyris difformis var. curtissii

Curtiss' yelloweyed grass (Xyris difformis var. curtissii) is a perennial in the — family. Native range includes AR, OK. Hardy in zones 5a–11b. Mature size 6"–3'. Blooms Jun–Oct.

// QUICK FACTS

Family: —
Group: perennial
Native range: Native to 28 U.S. states, including AL, AR, CT, DC, DE, FL…
USDA hardiness: Zones 5a–11b
Mature size: 6"–3'
Sun: —
Water: —
Bloom: Jun–Oct
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Curtiss' yelloweyed grass (Xyris difformis var. curtissii) — *Xyris difformis var. curtissii* — Curtiss' yelloweyed grass. Photo via iNaturalist — (c) Hannah McCurdy-Adams, some rights reserved (CC BY).

Field Notes

[ growing · ecology · siting · care ]

Curtiss' yelloweyed grass (Xyris difformis var. curtissii) is a perennial in the — family. Native range includes AR, OK. Hardy in zones 5a–11b. Mature size 6"–3'. Blooms Jun–Oct.

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, curtiss' yelloweyed grass pairs naturally with: Broadleaf Arrowhead (Sagittaria latifolia), Blue-Eyed Grass (Sisyrinchium angustifolium), Butterfly Milkweed (Asclepias tuberosa), Cardinal Flower (Lobelia cardinalis).