Asclepias, Swamp Milkweed, Rose Milkweed, Swamp Silkweed 'Cinderella'

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
Height
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
Magenta (pink-purple)
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
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
Patent Information
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 seedheads to dry on plants; remove and collect seeds
Properly cleaned, seed can be successfully stored
Regional

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

Bridgeview, Illinois

Greenville, Indiana

Wichita, Kansas

Boston, Massachusetts

Brockton, Massachusetts

Dracut, Massachusetts

Townsend, Massachusetts

Winthrop, Massachusetts

Blissfield, Michigan

Garden City, Michigan

Pinconning, Michigan

Kasota, Minnesota

Wayzata, Minnesota

Columbia, Mississippi

New Milford, New Jersey

Trenton, New Jersey

Clifton Park, New York

Croton On Hudson, New York

North Tonawanda, New York

Wake Forest, North Carolina

Delaware Water Gap, Pennsylvania

North Augusta, South Carolina

Azle, Texas

Fort Worth, Texas(2 reports)

Los Fresnos, Texas

Salt Lake City, Utah

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Gardener's Notes:

7
positives
2
neutrals
0
negative
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J
Toronto, ON (Zone 6a) | October 2019 | positive

According the info I read, this variety has vanilla scented flowers. Any one who grow this can confirm it? Thanks!
[...Read More

B
Boston, MA (Zone 5b) | September 2019 | positive

This plant gets covered in monarch caterpillars! The adults love the flowers and the babies love to eat the leaves. Likes decent amount o...Read More

S
Brockton, MA (Zone 6a) | May 2015 | positive

Got mine at a DG Roundup many years ago. Took a few years to make a statement but I love it now.
Nasty yellow aphids infest new s...Read More

P
P
North Tonawanda, NY (Zone 6a) | May 2012 | positive

Mine is planted next to a gutter down spout so it takes up the excess water in the soil that the other plants in that bed don't necessari...Read More

C
Bridgeview, IL | April 2012 | neutral

I planted 6 of these last year, I ordered healthy plants with a well developed root system, & planted them in full sun. They grew tall bu...Read More

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

This plant is supposed to grow in zones 4a-9b, yet I have one growing in zone 10a! This plant is adaptive. :-)

G
Trenton, NJ | August 2008 | neutral

This plant is vigorous. Mine get at least 4 feet tall. The flowers smell absolutely divine and are very pretty, especially up close. L...Read More

L
L
Greenville, IN (Zone 6a) | September 2007 | positive

I love this plant I have two planted in different spots the butterflies love it! Mine doesn't set seed, does anyone know why it keeps co...Read More

F
New Milford, NJ | September 2006 | positive

Despite being an oleander aphid magnet (as are all milkweeds), it's tall, beautiful, and the monarch caterpillars like it. I had grown m...Read More

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