A Comprehensive Guide to Horsetail Milkweed (Asclepias subverticillata)
Horsetail Milkweed (Asclepias subverticillata) is a herbaceous perennial that is native to the south-central and southwestern United States. This plant is a host to the Queen (Danaus gilippus) and Monarch (Danaus plexippus) butterflies. Growing from 0.5 to 4 feet tall, this species has white to greenish-white colored flowers, sometimes with some purple that bloom from June to August. It is hardy in zones 5-8.








