// SPECIES PROFILE · GRASS · NATIVE

Southwestern cupgrass

Eriochloa acuminata var. acuminata

Southwestern cupgrass (Eriochloa acuminata var. acuminata) is a grass in the — family. Native range includes AR, MO, OK. Hardy in zones 3a–11a. Mature size 6"–4'. Blooms Aug–Sep.

// QUICK FACTS

Family: —
Group: grass
Native range: Native to 20 U.S. states, including AR, AZ, CA, GA, IL, KY…
USDA hardiness: Zones 3a–11a
Mature size: 6"–4'
Sun: —
Water: —
Bloom: Aug–Sep
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Southwestern cupgrass (Eriochloa acuminata var. acuminata) — *Eriochloa acuminata var. acuminata* — Southwestern cupgrass. Photo via iNaturalist — (c) Wendy McCrady, some rights reserved (CC BY).

Field Notes

[ growing · ecology · siting · care ]

Southwestern cupgrass (Eriochloa acuminata var. acuminata) is a grass in the — family. Native range includes AR, MO, OK. Hardy in zones 3a–11a. Mature size 6"–4'. Blooms Aug–Sep.

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, southwestern cupgrass pairs naturally with: Awlfruit sedge (Carex stipata), Broadleaf cattail (Typha latifolia), Burgrass (Cenchrus longispinus), Redroot flatsedge (Cyperus erythrorhizos).