// SPECIES PROFILE · GRASS · NATIVE

Knotted rush

Juncus nodosus var. nodosus

Knotted rush (Juncus nodosus var. nodosus) is a grass in the — family. Native range includes MO — verified against the Lady Bird Johnson Wildflower Center native distribution database. Hardy in zones 1a–11a. Mature size 6"–2'. Blooms Jun–Aug.

// QUICK FACTS

Family: —
Group: grass
Native range: Native to 35 U.S. states, including AK, CA, CO, CT, DE, IA…
USDA hardiness: Zones 1a–11a
Mature size: 6"–2'
Sun: Full sun
Water: Medium
Bloom: Jun–Aug
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Knotted rush (Juncus nodosus var. nodosus) — *Juncus nodosus var. nodosus* — Knotted rush. Photo via iNaturalist — no rights reserved.

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, knotted rush pairs naturally with: Broadleaf cattail (Typha latifolia), Smooth brome (Bromus inermis), Needle spikerush (Eleocharis acicularis), Needle spikerush (Eleocharis acicularis var. porcata).