// SPECIES PROFILE · PERENNIAL · NATIVE

Spineless hornwort

Ceratophyllum echinatum

Spineless hornwort (Ceratophyllum echinatum) is a perennial in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2b–11b. Mature size 6"–3'.

// QUICK FACTS

Family: —
Group: perennial
Native range: Native to 35 U.S. states, including AL, AR, CT, DE, FL, GA…
USDA hardiness: Zones 2b–11b
Mature size: 6"–3'
Sun: —
Water: —
Bloom: —
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Spineless hornwort (Ceratophyllum echinatum) — *Ceratophyllum echinatum* — Spineless hornwort. Photo by Robert Curtis, Summit Metro Parks, iNaturalist observer via Wikimedia Commons (CC BY 4.0).

Field Notes

[ growing · ecology · siting · care ]

Spineless hornwort (Ceratophyllum echinatum) is a perennial in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2b–11b. Mature size 6"–3'.

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, spineless hornwort pairs naturally with: Broadleaf Arrowhead (Sagittaria latifolia), Common Evening Primrose (Oenothera biennis), Lady Fern (Athyrium filix-femina), Sunchoke / Jerusalem Artichoke (Helianthus tuberosus).