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Green Antelopehorn

Asclepias viridis

Found in prairies, dry woodlands, calcareous hammocks, pine rocklands (s. FL), roadsides, pastures. FloraQuest, phone app (app page) What its natural habitat tells you

69
Strong

Native to Alabama. How scores work Is it native here?

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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 39 Alabama counties.

Natural habitats

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

1 of 4

Prairies and grasslands

Grand Prairie, Coosa Valley Prairies, Floyd County
Limestone prairie. Shown: Grand Prairie, Coosa Valley Prairies, Floyd County, Georgia, a neighboring state.Grand Prairie, Coosa Valley Prairies, Floyd County, Alan M. Cressler / U.S. Geological Survey, undated. Public domain. Source record.

Dry forests and woodlands

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

Coastal Plain hammocks

Dense, evergreen groves of live oak, magnolia and other hardwoods in the southern Coastal Plain, from dry oak domes to wet hydric hammocks and south Florida's tropical hammocks; salt-shaped maritime hammocks are maritime forests.

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

13CaterpillarsGenus host records with ranges including AL

Genus host records with ranges including AL · 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
  • Pyrrharctia isabellaIsabella Tiger Moth, Banded Woolybear
Show all 13
  • Spodoptera frugiperdaFall Armyworm Moth
  • Strymon melinusGray Hairstreak
  • Pygarctia eglenensis
Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
59BeesSoutheastern regional records

Southeastern regional records · Asclepias

Individual names are not available yet.

Noori, Seltmann & Orr 2026, A curated and integrated dataset for exploring global bee-plant interactions (GloBI), Zenodo, CC BY 4.0
0Specialist 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

No records yet · Ants · Beetles · Flies · Adult butterflies / moths · Other wasps · Other insects

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

Alabama rankSNR
Global rankNot available
AL statusNot verified
Federal statusNot verified

Conservation source

In your garden

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Sources