Asclepias, Swamp Milkweed, Rose Milkweed, Swamp Silkweed 'Ice Ballet'

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
Sun to Partial Shade
Foliage
Herbaceous
Height
24-36 in. (60-90 cm)
36-48 in. (90-120 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
All parts of plant are poisonous if ingested
Bloom Color
White/Near White
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:

North Little Rock, Arkansas

Hollywood, Florida

Cordele, Georgia

Edwardsville, Illinois

Evanston, Illinois

Machesney Park, Illinois

Mount Prospect, Illinois

Barbourville, Kentucky

Hebron, Kentucky

Brookeville, Maryland

Riverdale, Maryland

Spencer, Massachusetts

Bellaire, Michigan

Dearborn Heights, Michigan

Pinconning, Michigan

Redford, Michigan

Royal Oak, Michigan(2 reports)

Andover, Minnesota

Columbia, Mississippi

Croton On Hudson, New York

Glen Head, New York

Phoenicia, New York

Belfield, North Dakota

Fargo, North Dakota

Lansdowne, Pennsylvania

Lewisburg, Pennsylvania

Norristown, Pennsylvania

West Chester, Pennsylvania

Wilkes Barre, Pennsylvania

Austin, Texas

Fort Worth, Texas

Arlington, Virginia

Leesburg, Virginia

Lexington, Virginia

Bellevue, Washington

Kalama, Washington

Hartford, Wisconsin

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Featured Videos

Gardener's Notes:

4
positives
2
neutrals
0
negative
Sort By:
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R
Downingtown, PA | March 2016 | positive

This white cultivar like the pink mother species is an easy, reliable perennial. A number of Milkweed species get hit later in the season...Read More

S
S
Anne Arundel,, MD (Zone 7b) | October 2015 | neutral

Grown well in a damp cool bed, from a tiny plant two years ago Bloomed this year but soon began severe yellowing. Attractive to the round...Read More

C
C
Lewisburg, PA (Zone 6b) | June 2014 | positive

One of the best choices I've made in my perennial garden. I planted a clump of this (plants from Lazy S) last fall in the back of the gar...Read More

M
Phoenicia, NY (Zone 5a) | June 2010 | positive

This is a really beautiful white-flowering NY-native plant that I used to replace some more invasive exotic white-flowering plants. It is...Read More

J
J
Belfield, ND (Zone 4a) | July 2006 | positive

Milkweed is essential food for the monarch butterfly larva. I have one little struggling plant in a part of the yard that's not taken ca...Read More

G
(Zone 5a) | January 2006 | neutral

Swamp Milkweed blooms are very pretty, but it is extremely susceptible to aphids. I plant mine in the back of my yard where it is there ...Read More

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