General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Water Preferences: Mesic
Dry Mesic
Dry
Minimum cold hardiness: Zone 5a -28.9 °C (-20 °F) to -26.1 °C (-15 °F)
Plant Height: 8 - 24 inches
Plant Spread: 12 - 36 inches
Fruit: Showy
Flowers: Showy
Flower Color: Multi-Color: white, pale greenish and maroon
Bloom Size: Under 1"
Flower Time: Spring
Late spring or early summer
Summer
Late summer or early fall
Underground structures: Taproot
Suitable Locations: Xeriscapic
Alpine Gardening
Uses: Will Naturalize
Wildlife Attractant: Bees
Butterflies
Resistances: Deer Resistant
Rabbit Resistant
Toxicity: Leaves are poisonous
Other: See comments for info about toxicity to contact with the plant sap, please
Propagation: Seeds: Provide light
Stratify seeds: 3 months at 40 degrees
Suitable for wintersowing
Pollinators: Moths and Butterflies
Bees
Various insects
Containers: Not suitable for containers

Image
Common names
  • Antelope Horns
  • Spider Milkweed
  • Milkweed
  • Green-flowered Milkweed
  • Spider Antelope-horns

Photo Gallery
Location: St Louis
Date: 2022-08-26
Location: Wasatch Front, Utah
Date: 2015-06-07
Location: front pasture
Date: 2016-04-10
#Pollination
Location: Bandera Co., Texas
Date: April 2007
Antelope Horns
Location: Kyle, TX
Date: 2023-05-11
Monarch favorite
Location: Wasatch Mountains, Salt Lake County, UT
Date: June 11, 2020
Location: Goldthwaite, TX
Date: 2012-04-18
Location: My Garden
Date: 2023-04-04
Pollination
Location: north central Texas
Date: 2020-06-08
Pods in the process of dispersing seeds

Date: 2017-05-26
Location: Front pasture
Date: 2016-05-24
Location: Wasatch Front, Utah
Date: 2015-06-07

Photo courtesy of: davidbygott
Location: Wasatch Mountains, Salt Lake County, UT
Date: 2020-07-23
Location: San Antonio TX
Date: 2017-10-22
picture is of seeds after removed from pods and the white feather
Location: Bandera Co., Texas
Date: April 2007
Antelope Horns, with butterfly and bees

Photo courtesy of: davidbygott

Date: 2009-07-09
Seed Pods harvested from local native Antelope Horns Milkweed
Location: Goldthwaite, TX
Date: 2012-04-18

Photo courtesy of: davidbygott

Photo courtesy of: davidbygott
Comments:
  • Posted by LindaTX8 (Medina Co., TX - Zone 8a) on May 4, 2012 1:18 PM concerning plant:
    Milkweeds are host plants for the Monarch and Queen butterflies and suitable for butterfly gardens. Precautions should be taken, however, whenever any contact occurs with the white latex-like sap of the plant. A few sensitive individuals can have reactions to just getting this on their skin. Also, precautions should be taken to avoid any possible contact with the eyes. This toxic sap can cause serious eye problems and even swelling of the cornea of the eye. Wash your hands thoroughly after any contact with the sap. If your eyes are somehow exposed to it, immediately take measures to protect your eyesight! Wash your hands, rinse out your eyes and call an eye doctor.
Plant Events from our members
ricelg On January 3, 2018 Maintenance performed
Placed seeds on paper towel moistened with distilled water and sealed in Ziploc bag in refrigerator
MrsBinWY On March 25, 2018 Potted up
7
MrsBinWY On March 4, 2018 Seeds germinated
2
MrsBinWY On January 21, 2018 Seeds sown
16 seeds from ricelg in milk jug in cold sunroom; moved to room temp ~2-24-18
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