Asclepias, Swamp Milkweed, Rose Milkweed, Swamp Silkweed 'Soulmate'

Asclepiasincarnata

Family
Apocynaceae (a-pos-ih-NAY-see-ee)
Genus
Asclepias (ass-KLE-pee-us)
Species
incarnata (in-kar-NAH-tuh)
Synonym
Sun Exposure
Full Sun
Foliage
Herbaceous
Height
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)
Spacing
18-24 in. (45-60 cm)
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
All parts of plant are poisonous if ingested
Bloom Color
Pink
Bloom Time
Mid Summer
Late Summer/Early Fall
Other Details
Category
Perennials
Water Requirements
Requires consistently moist soil; do not let dry out between waterings
Foliage Color
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Other details
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
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors
Seed Collecting
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:

Lockport, Illinois

Mount Prospect, Illinois

Palmyra, Illinois

Westmont, Illinois

Barbourville, Kentucky

Hebron, Kentucky

Amesbury, Massachusetts

Springfield, Massachusetts

Adrian, Michigan

Royal Oak, Michigan

Concord, North Carolina

New Freedom, Pennsylvania

Norristown, Pennsylvania

Eagle, Wisconsin

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Gardener's Notes:

4
positives
3
neutrals
0
negative
Sort By:
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J
Toronto, ON (Zone 6a) | March 2019 | neutral

I read about this plant with fragrant flowers but here no one mentioned it. Anyone can tell me if there is fragrance? Thanks!

0
| November 2015 | neutral

Unfortunately this plant is not as good as Asclepias tuberosa.
Tuberosa flowers for around 3 months or more, soulmate was about 6 ...Read More

T
Concord, NC | March 2013 | positive

Very lovely plant! It's tall but not as tall as Brazilian verbena so just planted it infront of one and the two go great together and the...Read More

M
Hebron, KY | November 2006 | positive

Beautiful, I love it!

First Milkweed, but not my last! I love offering plants and flowers for the BF's and their 'Cats'.

D
D
Springfield, MA (Zone 6a) | August 2006 | positive

i had 3 volunteer seedlings from this plant. they were close together and i left one which matured quickly and left me with 1 limb. the...Read More

T
dobie, ON (Zone 3a) | November 2005 | positive

When I bought this plant this spring, it was just a tiny stick. Grew fast and bloomed for a long time. Seed heads must be allowed to matu...Read More

E
E
| September 2003 | neutral

This plant was easy to start from seed. First year plants have taken off well and are blooming in September. Even when they were about ...Read More

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