// SPECIES PROFILE · ANNUAL · NATIVE

Desert horse-purslane

Trianthema portulacastrum

Desert horse-purslane (Trianthema portulacastrum) is a annual in the — family. Native range includes AR, MO, OK. Hardy in zones 2b–11b.

// QUICK FACTS

Family: —
Group: annual
Native range: Native to 21 U.S. states, including AL, AR, AZ, CA, CO, FL…
USDA hardiness: Zones 2b–11b
Mature size: —
Sun: Part shade
Water: Medium
Bloom: —
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Desert horse-purslane (Trianthema portulacastrum) — *Trianthema portulacastrum* — Desert horse-purslane. Photo by Graham Racher via Wikimedia Commons (CC BY-SA 2.0).

Field Notes

[ growing · ecology · siting · care ]

Desert horse-purslane (Trianthema portulacastrum) is a annual in the — family. Native range includes AR, MO, OK. Hardy in zones 2b–11b.

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, desert horse-purslane pairs naturally with: Common Sunflower (Helianthus annuus), Swamp verbena (Verbena hastata), Annual ragweed (Ambrosia artemisiifolia var. artemisiifolia), Devil's beggartick (Bidens frondosa).