Asclepias Species, Whorled Milkweed, Whorled-leaf Milkweed, Horsetail Milkweed

Asclepiasverticillata

Family
Apocynaceae (a-pos-ih-NAY-see-ee)
Genus
Asclepias (ass-KLE-pee-us)
Species
verticillata (ver-ti-si-LAH-tuh)
Synonym
Asclepias galioides
Asclepias linifolia
Asclepias parviflora
Sun Exposure
Full Sun
Foliage
Herbaceous
Height
24-36 in. (60-90 cm)
Spacing
24-36 in. (60-90 cm)
Hardiness
USDA Zone 3a: to -39.9 °C (-40 °F)
USDA Zone 3b: to -37.2 °C (-35 °F)
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
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
Parts of plant are poisonous if ingested
Bloom Color
Pale Green
White/Near White
Bloom Time
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Other Details
Category
Perennials
Water Requirements
Drought-tolerant; suitable for xeriscaping
Foliage Color
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Other details
May be a noxious weed or invasive
Soil pH requirements
Patent Information
Non-patented
Propagation Methods
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From herbaceous stem cuttings
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors
From seed; direct sow after last frost
Seed Collecting
Bag seedheads to capture ripening seed
Allow pods to dry on plant; break open to collect seeds
Properly cleaned, seed can be successfully stored
Regional

This plant is said to grow outdoors in the following regions:

Morrilton, Arkansas

Gainesville, Florida

Itasca, Illinois

La Grange Park, Illinois

Rock Falls, Illinois

Pacific Junction, Iowa

Yale, Iowa

Olathe, Kansas

Shawnee Mission, Kansas

Royal Oak, Michigan

Minneapolis, Minnesota(2 reports)

Helena, Montana

Doniphan, Nebraska

Albuquerque, New Mexico

Wilkes Barre, Pennsylvania

Arlington, Texas

Austin, Texas

Leesburg, Virginia

show all

Featured Videos

Gardener's Notes:

5
positives
1
neutral
1
negative
Sort By:
Sort By:
C
(Zone 5a) | July 2015 | positive

I discovered this plant along the gravel road next to my property today. Based on the skirted flower, I knew right away it was a Milkwe...Read More

K
Greater Upper Marlboro, MD | December 2012 | negative

This plant (and most milkweeds) are poisonous to horses and should not be planted where there is a possibility they could self seed and b...Read More

J
Olathe, KS | May 2010 | positive

I got this plant in Lawrence at a monarch butterfly conservation event. I planted it it near a short path of natural stones, and it looks...Read More

M
M
Whiteside County, IL (Zone 5a) | August 2009 | neutral

This is a native plant in Illinois. I purchased one this year from a center that sells natives. Later I found it growing in a conservatio...Read More

D
Los Fresnos, TX (Zone 10a) | July 2008 | positive

Whorled Milkweed also grows in Zone 10! ( you just need to use Cold Moist Stratification on the seeds so the germinate in zone 10).

M
Coon Rapids, MN (Zone 4a) | February 2008 | positive

The most eastern of the narrowleaf milkweed species, of which most species are located in Western North America. Strongly linked to sandy...Read More

F
Josephine, Arlington, TX (Zone 8a) | November 2006 | positive

Whorled Milkweed, Whorled-leaf Milkweed, Asclepias verticilata is Native to Texas and other States.

Featured
Eyed Elator
(Alaus oculatus)
Australasian Figbird
(Sphecotheres vieilloti)
Featured
Eyed Elator
(Alaus oculatus)
Australasian Figbird
(Sphecotheres vieilloti)