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Caper Spurge

Euphorbia lathyris

Found in roadsides, disturbed areas. Weakley, Flora of the Southeastern United States (2025), Northern Tier edition What its natural habitat tells you

-30
Harmful

Not native to West Virginia. How scores work Is it native here?

Profile 71%

Light
Full sun, Partial shade
Soil moisture
Dry to moist

Do not plant. Listed invasive in West Virginia.

At a glance

Life cycle
Annual or biennial
Bloom
May to August

Not yet recorded · Height · Spread · Leaves

This plant is missing most of its facts, so Quercus is looking them up in old botany books.

Recorded in 3 West Virginia counties.

Natural habitats

Places it grows wild. Not a planting requirement. Each habitat page lists the plants and wildlife also found there.

Roadsides, fields and disturbed ground

Ground opened by people: roadsides, old fields, pastures, fencerows and lots.

All habitats

Ecological relationships

Who uses this plant?

What these records mean

7CaterpillarsGenus host records with ranges including WV

Genus host records with ranges including WV · Euphorbia

  • Automeris ioIo Moth
  • Episimus argutanaSumac Leaftier
  • Eudryas unioPearly Wood-Nymph
  • Eutrapela clematariaCurved-Tooth Geometer, Purplish Brown Looper
  • Hypercompe scriboniaGiant Leopard Moth, Great Leopard Moth
  • Lobocleta plemyrariaStraight-Lined Wave
  • Sparganothis sulfureanaSparganothis Fruitworm Moth, Sulfur Leafroller, False Yellow-Head
Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
—BeesSoutheastern regional records
—Specialist beesPollen specialists
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
Hurlbert, Olsen, Sawyer & Winner 2021, Avian Diet Database, Scientific Data 8: 260 (CC0)

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

Growing and identification

Plant details

Family
Euphorbiaceae
Hardiness
Zones 1a–11b
Soil pH
Neutral to alkaline
Flower color
Yellow or green

Safety has not been reviewed for this plant; check toxicity and thorns before planting.

Growing sources and scope
Also known as

Mole Plant; Myrtle Spurge

Conservation status

West Virginia rankSNA
Global rankGNR
WV statusNot verified
Federal statusNot verified

Conservation source Global and federal source

Native alternatives

Find natives for your garden

Sources