Spreading Sandmat
Euphorbia humistrata
In the Carolinas and Georgia, found in floodplain and bottomland forests; streams, rivers and their banks; roadsides, fields and disturbed ground. Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition What its natural habitat tells you
Native status unresolved in Louisiana. How scores work Is it native here?
Profile 59%
- Light
- Partial shade, Full sun
- Soil moisture
- Dry to wet

At a glance
- Bloom
- April to October
Not yet recorded · Height · Spread · Life cycle · Leaves
This plant is missing most of its facts, so Quercus is looking them up in old botany books.
Recorded in 10 Louisiana parishes.
Natural habitats
Places it grows wild. Not a planting requirement. Each habitat page lists the plants and wildlife also found there.
Floodplain and bottomland forests
Forests on low ground beside rivers and streams that flood from time to time.
Streams, rivers and their banks
Flowing water and its banks, bars and rocky shoals.
Roadsides, fields and disturbed ground
Ground opened by people: roadsides, old fields, pastures, fencerows and lots.
Who uses this plant?
13CaterpillarsGenus host records with ranges including LA
Genus host records with ranges including LA · Euphorbia
- Automeris ioIo Moth
- Episimus argutanaSumac Leaftier
- Erinnyis alopeAlope Sphinx
- Erinnyis obscuraObscure Sphinx
- Eudryas unioPearly Wood-Nymph
- Eutrapela clematariaCurved-Tooth Geometer, Purplish Brown Looper
- Hypercompe scriboniaGiant Leopard Moth, Great Leopard Moth
- Lobocleta plemyrariaStraight-Lined Wave
- Melanochroia chephiseWhite-Tipped Black Moth, Snowbush Spanworm
- Pygarctia abdominalisYellow-Edged Pygarctia
Show all 13
- Pygarctia spragueiSprague's Pygarctia Moth
- Sparganothis sulfureanaSparganothis Fruitworm Moth, Sulfur Leafroller, False Yellow-Head
- Ethelgoda texanana
14BirdsRecorded genus food-resource interactions; not a state feeding claim
Recorded genus food-resource interactions; not a state feeding claim · Euphorbia
- Anthus rubescensAmerican Pipit
- Anthus spragueiiSprague's Pipit
- Calcarius pictusSmith's Longspur
- Callipepla gambeliiGambel's Quail
- Cardinalis cardinalisNorthern Cardinal
- Columbina passerinaCommon Ground Dove
- Corvus brachyrhynchosAmerican Crow
- Cyrtonyx montezumaeMontezuma Quail
- Meleagris gallopavoWild Turkey
- Pooecetes gramineusVesper Sparrow
Show all 14
- Spizella breweriBrewer's Sparrow
- Spizella pusillaField Sparrow
- Tympanuchus pallidicinctusLesser Prairie-Chicken
- Zenaida macrouraMourning Dove
Direct food only: birds recorded eating this genus across North America. Caterpillars on host plants also feed nesting birds. NC Native Plant Society: butterfly gardening
Plant details
- Family
- Euphorbiaceae
Safety has not been reviewed for this plant; check toxicity and thorns before planting.
Growing sources and scope
- Bloom · “April to October” · Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition · Carolinas and Georgia
- Light · “Partial shade; Full sun (documented habitat)” · Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition · Carolinas and Georgia
- Soil · “Dry; Moist; Wet (documented habitat)” · Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition · Carolinas and Georgia
Also known as
Chamaesyce humistrata; Spreading Sand Mat
Conservation status
| Louisiana rank | SNR |
|---|---|
| Global rank | Not available |
| LA status | Not verified |
| Federal status | Not verified |
Will it fit your yard?
Check this plant against your county, sun and soil moisture. Conditions are checked in your browser.
Sources
- Weakley, Flora of the Southeastern United States (2025)
- Louisiana occurrence source
- Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
- Noori, Seltmann & Orr 2026, A curated and integrated dataset for exploring global bee-plant interactions (GloBI), Zenodo, CC BY 4.0
- Smith, Bachelder, Russell, Morales, Mosher & Seltmann 2024, Bee-Specialization-Modeling v0.6.1 (specialist host table compiled from J. Fowler's pollen specialist bee lists), Zenodo, CC BY 4.0
- Hurlbert, Olsen, Sawyer & Winner 2021, Avian Diet Database, Scientific Data 8: 260 (CC0)
- Narango, Tallamy & Shropshire 2020, Few keystone plant genera support the majority of Lepidoptera species, Nature Communications

