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Green Antelopehorn

Asclepias viridis

In the Carolinas and Georgia, found in prairies, dry woodlands, calcareous hammocks, pine rocklands (s. FL), roadsides, pastures. Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition What its natural habitat tells you

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Not scored

Native status unresolved in Louisiana. How scores work Is it native here?

Profile 82%

Height
1.5–2.5 feet
Spread
1–2 feet
Light
Full sun
Soil moisture
Dry to average

Space about 1.5 ft apart from its recorded spread, about 44 per 100 sq ft. Enter your bed size for a count

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At a glance

Life cycle
Perennial
Bloom
January to November

Not yet recorded · Leaves

Recorded in 31 Louisiana parishes.

Natural habitats

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

1 of 3

Prairies and grasslands

Open, grass-dominated places kept open by fire, grazing or thin soil, from tallgrass prairie to Piedmont prairies.

Dry forests and woodlands

Forests and open woodlands on dry ridges and slopes, often oak or pine.

Roadsides, fields and disturbed ground

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

All habitats

Also found with this plant

Wildlife whose habitat models include habitats this plant grows in, in Louisiana. Shared habitat, not food. 67 animals.

All wildlife of Louisiana

Ecological relationships

Who uses this plant?

What these records mean

14CaterpillarsGenus host records with ranges including LA

Genus host records with ranges including LA · Asclepias

  • Danaus plexippusMonarch
  • Agathodes monstralisSky-Pointing Moth
  • Cycnia collarisUnexpected Cycnia
  • Cycnia teneraDelicate Cycnia, Dogbane Tiger Moth
  • Danaus gilippusQueen
  • Euchaetes egleMilkweed Tussock Moth or Milkweed Tiger Moth
  • Hyalophora cecropiaCecropia Silkmoth, Cecropia Moth
  • Papaipema nebrisStalk Borer
  • Platynota flavedanaBlack-Shaded Platynota
  • Pygarctia spragueiSprague's Pygarctia Moth
Show all 14
  • Pyrrharctia isabellaIsabella Tiger Moth, Banded Woolybear
  • Spodoptera frugiperdaFall Armyworm Moth
  • Strymon melinusGray Hairstreak
  • Pygarctia eglenensis
Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
—BeesSoutheastern regional records
—Specialist beesPollen specialists
1BirdsRecorded genus food-resource interactions; not a state feeding claim

Recorded genus food-resource interactions; not a state feeding claim · Asclepias

  • Ortalis vetulaPlain Chachalaca
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
Apocynaceae
Hardiness
Zones 4a–9b
Soil pH
Neutral
Flower color
Green or purple

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

Growing sources and scope
Also known as

Spider Milkweed

Conservation status

Louisiana rankSNR
Global rankNot available
LA statusNot verified
Federal statusNot verified

Conservation source

In your garden

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Sources