// SPECIES PROFILE · ANNUAL · NATIVE

Two-headed water-starwort

Callitriche heterophylla

Two-headed water-starwort (Callitriche heterophylla) is a annual in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 1a–11b. Blooms Mar–May.

// QUICK FACTS

Family: —
Group: annual
Native range: Native to 49 U.S. states, including AK, AL, AR, AZ, CA, CO…
USDA hardiness: Zones 1a–11b
Mature size: —
Sun: Full sun
Water: High · moisture-loving
Bloom: Mar–May
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Two-headed water-starwort (Callitriche heterophylla) — *Callitriche heterophylla* — Two-headed water-starwort. Photo by Mason Brock (Masebrock) via Wikimedia Commons (Public domain).

Field Notes

[ growing · ecology · siting · care ]

Two-headed water-starwort (Callitriche heterophylla) is a annual in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 1a–11b. Blooms Mar–May.

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, two-headed water-starwort pairs naturally with: Common Sunflower (Helianthus annuus), Two-headed water-starwort (Callitriche heterophylla ssp. heterophylla), Pitseed goosefoot (Chenopodium berlandieri), Pitseed goosefoot (Chenopodium berlandieri var. boscianum).