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Asclepias asperula
Asclepias asperula
Asclepias asperula
Asclepias asperula

Asclepias asperula

TAXONOMY

FamilyApocynaceae
GenusAsclepias
Zone7

ABOUT

Asclepias asperula, commonly known as antelope horns or spider milkweed, is a perennial plant native to the southwestern United States. It belongs to the Apocynaceae family and is known for its unique, horn-like seed pods and clusters of greenish-white flowers. This plant is an important host for monarch butterflies and thrives in temperate climates.

ALSO KNOWN AS

Antelope Horns
Acerates asperula
Asclepias asperula var. asperula
Asclepiodora asperula

OVERVIEW

WaterDry
SoilLoamy
LightDirect Bright (6 Hours)
Temperature20° C
Humidity40%
Dormancy3 Months
pH6.5
Pressure1,013 mbar

DETAILS

Care Instructions
Asclepias asperula requires bright, direct sunlight for optimal growth. It prefers moderate temperatures and low humidity. Water the plant sparingly, allowing the soil to dry out almost completely between waterings. This plant is relatively low-maintenance but may require some attention to ensure it remains healthy.
Soil
Asclepias asperula prefers well-draining loam soil. It can tolerate poor soil conditions but thrives best in moderately nutrient-rich soil. Ensure the soil has good drainage to prevent waterlogging, which can harm the plant.
Fertilizer
This plant does not require regular fertilization. If desired, a light application of a balanced fertilizer in the early growing season can support its growth, but it generally thrives without additional nutrients.
Repotting
Repot Asclepias asperula when it outgrows its current container or if the soil has become compacted. Choose a slightly larger pot with good drainage and fresh loam soil. Repotting is best done in the early spring before the growing season begins.
Propagation
Asclepias asperula can be propagated through seeds or cuttings. Seeds should be sown in the fall or early spring, while cuttings can be taken during the growing season. Ensure the cuttings have adequate moisture and light to encourage root development.
Pruning
Pruning is not typically required for Asclepias asperula. However, removing dead or damaged stems and leaves can help maintain the plant's appearance and health. Prune in the early spring before new growth begins.
Toxicity
Asclepias asperula is toxic to pets and humans if ingested. The plant contains cardiac glycosides, which can cause symptoms such as nausea, vomiting, and diarrhea. Handle the plant with care and keep it out of reach of children and pets.
Additional
Asclepias asperula is an important plant for supporting monarch butterfly populations, as it serves as a host plant for their larvae. Planting this species can contribute to conservation efforts for these butterflies.
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How To Grow Asclepias asperula | EarthOne