// SPECIES PROFILE · GRASS · NATIVE

Seaside arrowgrass

Triglochin maritima

Seaside arrowgrass (Triglochin maritima) is a grass in the — family. Native range includes KS, OK. Hardy in zones 1a–11a. Blooms Apr–Nov.

// QUICK FACTS

Family: —
Group: grass
Native range: Native to 34 U.S. states, including AK, AZ, CA, CO, CT, DE…
USDA hardiness: Zones 1a–11a
Mature size: —
Sun: Full sun
Water: —
Bloom: Apr–Nov
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Seaside arrowgrass (Triglochin maritima) — *Triglochin maritima* — Seaside arrowgrass. Photo by Elke Freese via Wikimedia Commons (CC BY 2.5).

Field Notes

[ growing · ecology · siting · care ]

Seaside arrowgrass (Triglochin maritima) is a grass in the — family. Native range includes KS, OK. Hardy in zones 1a–11a. Blooms Apr–Nov.

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