Asclepias Species, Antelope Horns Milkweed

Asclepiasasperula subsp. capricornu

Family
Apocynaceae (a-pos-ih-NAY-see-ee)
Genus
Asclepias (ass-KLE-pee-us)
Synonym
Asclepias capricornu
Asclepias decumbens
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Evergreen
Smooth
Height
18-24 in. (45-60 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)
USDA Zone 9b: to -3.8 °C (25 °F)
Danger
All parts of plant are poisonous if ingested
Handling plant may cause skin irritation or allergic reaction
Bloom Color
Green
Pale Green
White/Near White
Bloom Time
Late Winter/Early Spring
Mid Spring
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Mid Fall
Other Details
Category
Perennials
Water Requirements
Foliage Color
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Other details
Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information
Non-patented
Propagation Methods
By dividing the rootball
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
Seed Collecting
Bag seedheads to capture ripening seed
Allow pods to dry on plant; break open to collect seeds
Regional

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Gardener's Notes:

0
positive
1
neutral
0
negative
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Josephine, Arlington, TX (Zone 8a) | November 2006 | neutral

Antelope Horns Milkweed, Asclepias asperula subsp. capricornu, is native to Texas and other States.

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