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Plant Database

Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

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Asclepias incarnata ssp. incarnata (Swamp milkweed)
Cressler, Alan

Asclepias incarnata ssp. incarnata

Asclepias incarnata L. ssp. incarnata

Swamp Milkweed

Asclepiadaceae (Milkweed Family)

Synonym(s):

USDA Symbol: ASINI

USDA Native Status: L48 (N), CAN (N)

The large, bright, terminal blossoms of this showy, 2-4 ft. perennial are made up of small, rose-purple flowers. Deep pink flowers clustered at the top of a tall, branching stem, bearing numerous narrow, lanceolate leaves. Opposite, narrow, lance-shaped leaves line the erect, open-branched stem. Elongated, tan-brown seed pods persist into winter.

ssp. incarnata—Plants glabrous or nearly so. (Bibref 281)

 

From the Image Gallery

6 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb
Leaf Arrangement: Opposite
Leaf Shape: Linear , Oblong
Leaf Margin: Entire
Fruit Type: Follicle

Bloom Information

Bloom Color: Red , Purple
Bloom Time: May , Jun , Jul , Aug , Sep

Distribution

USA: AL , AR , CO , CT , DE , FL , GA , IA , ID , IL , IN , KS , KY , LA , MA , MD , ME , MI , MN , MO , MT , ND , NE , NH , NJ , NM , NV , NY , OH , OK , PA , SD , TN , TX , UT , VA , VT , WI , WV , WY
Canada: NB , NS

Growing Conditions

Light Requirement: Sun
Soil Moisture: Moist , Wet

Benefit

Warning: All parts. Toxic only in large quantities. Syptoms include, vomiting, stupor, weakness, spasms. Toxic Principle: Cardiac glycosides and resinoids. (Poisonous Plants of N.C. State)
Conspicuous Flowers: yes
Attracts: Butterflies , Hummingbirds
Larval Host: Monarch and Queen Butterflies.
Nectar Source: yes
Deer Resistant: High
Poisonous: yes

Value to Beneficial Insects

Special Value to Native Bees
Special Value to Bumble Bees
Special Value to Honey Bees
Supports Conservation Biological Control

This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.

Bibliography

Bibref 281 - Shinners & Mahler's Illustrated Flora of North Central Texas (1999) Diggs, G. M.; B. L. Lipscomb; B. O'Kennon; W. F...

Search More Titles in Bibliography

Additional resources

USDA: Find Asclepias incarnata ssp. incarnata in USDA Plants
FNA: Find Asclepias incarnata ssp. incarnata in the Flora of North America (if available)
Google: Search Google for Asclepias incarnata ssp. incarnata

Metadata

Record Modified: 2017-08-14
Research By: TWC Staff, NH

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