// SPECIES PROFILE · GRASS · NATIVE

Cosmopolitan bulrush

Bolboschoenus maritimus

Cosmopolitan bulrush (Bolboschoenus maritimus) is a grass in the — family. Native range includes KS, MO, OK. Hardy in zones 1a–13a. Blooms Jul–Aug.

// QUICK FACTS

Family: —
Group: grass
Native range: Native to 35 U.S. states, including AK, AZ, CA, CO, CT, HI…
USDA hardiness: Zones 1a–13a
Mature size: —
Sun: Full sun
Water: Medium
Bloom: Jul–Aug
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Cosmopolitan bulrush (Bolboschoenus maritimus) — *Bolboschoenus maritimus* — Cosmopolitan bulrush. Photo by Christian Fischer via Wikimedia Commons (CC BY-SA 3.0).

Field Notes

[ growing · ecology · siting · care ]

Cosmopolitan bulrush (Bolboschoenus maritimus) is a grass in the — family. Native range includes KS, MO, OK. Hardy in zones 1a–13a. Blooms Jul–Aug.

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, cosmopolitan bulrush pairs naturally with: Broadleaf cattail (Typha latifolia), Toad rush (Juncus bufonius), Toad rush (Juncus bufonius var. bufonius), Softstem bulrush (Schoenoplectus tabernaemontani).