Capricornu Antelope Horns is a low growing milkweed with yellow and green flowers. Just like Spider Milkweed, this species breaks dormancy in early spring and is therefore a key host plant for spring migrant monarch butterflies making their way north from Mexico. If you’re looking for a smaller milkweed to place in your garden, Capricornu Antelope Horns is a great choice.
- Common names: Capricornu Antelope Horns, Capricornu Antelopehorns
- Latin name: Asclepias asperula ssp. capricornu
- Quantity of seeds per packet: 50
- Monarch butterfly host plant
- Yellow and green flowers
- Native to the southwestern United States
- Hardy perennial
- 12" - 24" tall
- Full sun
- Blooms from March until July
- Cold hardy in USDA zones 3 - 11
Growing Instructions: Start Capricornu Antelope Horns seeds outdoors in late November. Pick a location with full sun and prepare soil for good drainage, if needed. Plant seeds 1/8" deep and 18” apart, using 3 seeds per hole. Water once, and then allow the winter rain and/or snow to provide moisture until the spring. The seeds will germinate 10 - 20 days after the danger of nighttime freezing has past. Once the seedlings reach 1", thin out so you have individual plants spaced 18” apart. Water regularly allowing the soil to go nearly dry between each watering. Fertilize monthly in the summer with a general purpose fertilizer. If you prefer to plant the seeds outdoors in the spring, read our detailed instructions on cold moist stratification.
Capricornu Antelope Horns Range Map:
Map ©: Kartesz, J.T. 2013. Floristic Synthesis of North America, Version 1.0. Biota of North America Program (BONAP).
Capricornu Antelope Horns is native to the following states: Arizona, Kansas, Nebraska, New Mexico, Oklahoma, Texas