// SPECIES PROFILE · ANNUAL · NATIVE

Valley redstem

Ammannia coccinea

Valley redstem (Ammannia coccinea) is a annual in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2b–13a. Mature size 1"–40". Blooms May–Nov.

// QUICK FACTS

Family: —
Group: annual
Native range: Native to 32 U.S. states, including AL, AR, AZ, CA, DE, FL…
USDA hardiness: Zones 2b–13a
Mature size: 1"–40"
Sun: Full sun
Water: Medium
Bloom: May–Nov
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Valley redstem (Ammannia coccinea) — *Ammannia coccinea* — Valley redstem. Photo by Robert H. Mohlenbrock via Wikimedia Commons (Public domain).

Field Notes

[ growing · ecology · siting · care ]

Valley redstem (Ammannia coccinea) is a annual in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2b–13a. Mature size 1"–40". Blooms May–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, valley redstem pairs naturally with: Common Sunflower (Helianthus annuus), Plains Coreopsis (Coreopsis tinctoria), Slim amaranth (Amaranthus hybridus), Golden tickseed (Coreopsis tinctoria var. tinctoria).