// SPECIES PROFILE · ANNUAL · NATIVE

Geyer's sandmat

Chamaesyce geyeri

Geyer's sandmat (Chamaesyce geyeri) is a annual in the — family. Native range includes KS, MO, OK. Hardy in zones 2a–10a. Blooms Jul–Sep.

// QUICK FACTS

Family: —
Group: annual
Native range: Native to 19 U.S. states, including CO, IA, IL, IN, KS, LA…
USDA hardiness: Zones 2a–10a
Mature size: —
Sun: —
Water: —
Bloom: Jul–Sep
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Geyer's sandmat (Chamaesyce geyeri) — *Chamaesyce geyeri* — Geyer's sandmat. Photo via iNaturalist — (c) Rose Zappa, some rights reserved (CC BY).

Field Notes

[ growing · ecology · siting · care ]

Geyer's sandmat (Chamaesyce geyeri) is a annual in the — family. Native range includes KS, MO, OK. Hardy in zones 2a–10a. Blooms Jul–Sep.

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, geyer's sandmat pairs naturally with: Common Sunflower (Helianthus annuus), Plains Coreopsis (Coreopsis tinctoria), Swamp verbena (Verbena hastata), Annual ragweed (Ambrosia artemisiifolia var. artemisiifolia).