Asclepias Species, Spider Milkweed, Antelope Horns
Asclepiasasperula

Family: Apocynaceae (a-pos-ih-NAY-see-ee)
Genus: Asclepias (ass-KLE-pee-us)
Species: asperula (as-PAIR-uh-luh)

Synonym:Asclepias asperula

Synonym:Asclepiodora asperula

Category
Perennials

Water Requirements
Requires consistently moist soil; do not let dry out between waterings

Sun Exposure
Full Sun

Foliage
Herbaceous

Foliage Color

Height
12-18 in. (30-45 cm)
18-24 in. (45-60 cm)

Spacing
12-15 in. (30-38 cm)

Hardiness
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)

Where to Grow

Danger
Parts of plant are poisonous if ingested

Bloom Color
Pale Green
White/Near White

Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds

Bloom Size

Bloom Time
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall

Other details
May be a noxious weed or invasive

Soil pH requirements

Patent Information
Non-patented

Propagation Methods
From seed; direct sow outdoors in fall
From seed; stratify if sowing indoors

Seed Collecting
Allow pods to dry on plant; break open to collect seeds
Properly cleaned, seed can be successfully stored