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PlantFiles: Poke Milkweed, Tall Milkweed
Asclepias exaltata

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Family: Apocynaceae (a-pos-ih-NAY-see-ee) (Info)
Genus: Asclepias (ass-KLE-pee-us) (Info)
Species: exaltata (eks-all-TAY-tuh) (Info)

Synonym:Asclepias bicknellii
Synonym:Asclepias nivea
Synonym:Asclepias phytolaccoides

3 vendors have this plant for sale.

8 members have or want this plant for trade.

Category:
Perennials

Height:
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)

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)

Sun Exposure:
Full Sun

Danger:
All parts of plant are poisonous if ingested

Bloom Color:
Pale Green
Violet/Lavender
White/Near White

Bloom Time:
Mid Summer
Late Summer/Early Fall

Foliage:
Herbaceous

Other details:
This plant is attractive to bees, butterflies and/or birds
Requires consistently moist soil; do not let dry out between waterings

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:
Non-patented

Propagation Methods:
Unknown - Tell us

Seed Collecting:
Unknown - Tell us

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Profile:

1 positive
1 neutral
No negatives

Gardeners' Notes:

RatingAuthorContent
Neutral AmandaEsq On Oct 7, 2011, AmandaEsq from Greensboro, NC (Zone 7b) wrote:

I note that the DG plantfile says light requirements are full sun, but the plant does in fact prefer morning sun and afternoon shade.

Native to the eastern region of the United States, it requires cold moist stratification to germinate. Grows 2'-3' tall with white flowers followed by slender seed pods. Perennial.

Positive Malus2006 On Feb 22, 2008, Malus2006 from Coon Rapids, MN (Zone 4a) wrote:

Unusual among the milkweeds into that it prefers partial shade to woodland shade. I have seem small patches of it along the St. Croix river bottomland forest.

Regional...

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

Saint Helen, Michigan
Minneapolis, Minnesota
Wilkes Barre, Pennsylvania
Arlington, Texas
Leesburg, Virginia



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