Photo by Melody

PlantFiles: Clasping Milkweed, Bluntleaf Milkweed
Asclepias amplexicaulis

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Family: Apocynaceae (a-pos-ih-NAY-see-ee) (Info)
Genus: Asclepias (ass-KLE-pee-us) (Info)
Species: amplexicaulis (am-pleks-ih-KAW-liss) (Info)

Synonym:Asclepias rotundifolia

13 members have or want this plant for trade.

Category:
Perennials

Height:
12-18 in. (30-45 cm)
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)

Spacing:
24-36 in. (60-90 cm)

Hardiness:
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)

Sun Exposure:
Full Sun
Sun to Partial Shade

Danger:
Parts of plant are poisonous if ingested

Bloom Color:
Pale Pink
Pale Green

Bloom Time:
Late Spring/Early Summer
Mid Summer

Foliage:
Herbaceous

Other details:
This plant is attractive to bees, butterflies and/or birds
Drought-tolerant; suitable for xeriscaping

Soil pH requirements:
Unknown - Tell us

Patent Information:
Non-patented

Propagation Methods:
Unknown - Tell us

Seed Collecting:
Unknown - Tell us

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By Agrinerd
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Profile:

2 positives
1 neutral
1 negative

Gardeners' Notes:

RatingAuthorContent
Negative Bambooriver On Jun 24, 2010, Bambooriver from Stoneville, NC wrote:

A few years back, I had a serious allergic reaction to handling this plant. It grows wild here in the South (NC) and it does have a beautiful bloom, but, caution in handling, especially the milklike substance inside the stems.

Positive Danny112596 On Jul 31, 2008, Danny112596 from Los Fresnos, TX (Zone 10a) wrote:

Great Milkweed plant. It has big, broad leaves and a large cluster of flowers. It grows in zones 3b-9b, but will grow in zone 10. All you have to do is use cold moist stratification. (you put the seeds in the fridge for 1-2 months then plant outside.

Positive Agrinerd On Jul 2, 2008, Agrinerd from Franklin, NC (Zone 6b) wrote:

Nothing to rave about, but it's a distinctive native species that was attracting a lot of bumblebees and butterflies when I first found it. Does not seem to be invasive.

Neutral frostweed On Nov 30, 2006, frostweed from Josephine, Arlington, TX (Zone 8a) wrote:

Clasping Milkweed, Bluntleaf Milkweed Asclepias amplexicaulis is native to Texas and other States.

Regional...

This plant has been said to grow in the following regions:

Bartow, Florida
Vero Beach, Florida
Sturgis, Mississippi
Andover, New Hampshire
Franklin, North Carolina
Stoneville, North Carolina
Coatesville, Pennsylvania
Wilkes Barre, Pennsylvania
Burns, Tennessee
Dickson, Tennessee
Los Fresnos, Texas



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