Swamp Milkweed (Asclepias incarnata) in the Milkweeds Database

Common names:
Give a thumbs up Swamp Milkweed
Give a thumbs up Rose Milkweed
Give a thumbs up Pink Milkweed
Give a thumbs up Red Milkweed
Give a thumbs up Swamp Silkweed
Give a thumbs up White Indian Hemp
Give a thumbs up Milkweed

General Plant Information (Edit)
Plant Habit:Herb/Forb
Life cycle:Perennial
Sun Requirements:Full Sun
Full Sun to Partial Shade
Water Preferences:Wet
Wet Mesic
Mesic
Minimum cold hardiness:Zone 3 -40 °C (-40 °F) to -37.2 °C (-35)
Maximum recommended zone:Zone 9b
Plant Height:24 - 48 inches
Plant Spread:18 - 24 inches
Leaves:Other: Plants have a cluster of fleshy roots radiating outwards and are best left undisturbed once established. Foliage is slow to emerge in spring. It typically grows 3-4' tall (less frequently to 5') on branching stems. Stems exude a toxic milky sap when cut.
Flowers:Showy
Fragrant
Flower Color:Mauve
Pink
White
Bi-Color
Other: reflexed pink petals under/surrounding whitish hoods
Bloom Size:Under 1"
Flower Time:Late spring or early summer
Summer
Late summer or early fall
Underground structures:Rhizome
Suitable Locations:Bog gardening
Uses:Water gardens
Will Naturalize
Wildlife Attractant:Bees
Butterflies
Resistances:Deer Resistant
Rabbit Resistant
Flood Resistant
Humidity tolerant
Toxicity:Leaves are poisonous
Roots are poisonous
Other: Bitter tasting
Propagation: Seeds:Provide light
Self fertile
Stratify seeds: Needs 1 month cold moist treatment.
Suitable for wintersowing
Can handle transplanting
Propagation: Other methods:Division
Pollinators:Wasps
Moths and Butterflies
Flies
Bumblebees
Bees
Containers:Not suitable for containers

Image

Milkweed, in SeedMilkweed, in Seed
September 24, 2015

In late summer Milkweed pods dry and burst open, showing seeds with silky parachutes.

(Full article9 comments)
Give a thumbs up

This plant is tagged in:
Image Image Image

Comments:
Posted by Catmint20906 (Maryland - Zone 7a) on Aug 8, 2014 2:38 PM

Swamp Milkweed (Asclepias incarnata) is a larval host plant for the Monarch and Queen butterflies, and is a Monarch Way Station plant.

This plant has special value to native, bumble, and honey bees, including yellowfaced, sweat, green sweat, small resin, and leafcutter bees.

Swamp Milkweed (Asclepias incarnata) also supports conservation biological control by attracting beneficial insects which consume a variety of common garden pests.

[ Reply to this comment | Give a thumbs up ]

Posted by flaflwrgrl (North Fl. - Zone 8b) on Feb 25, 2015 7:28 PM

Native to every state in the U.S., except California, Arizona, Washington, Oregon, and Mississippi. Also native to Ontario, Manitoba, and Quebec provinces in Canada.
This is not an aggressively spreading milkweed. It blooms later than many milkweeds, which makes it a great candidate for extending the milkweed season.
This is both a nectar plant as well as host plant for the endangered Monarch butterfly, so it feeds the caterpillars as well as the adults.
Milkweeds are fantastic for the monarch butterfly population.
This is a milkweed that likes moisture, and the leaves are thin and will tend to dry out rather quickly if they are picked to feed Monarch caterpillars if you are trying to raise them.
This also attracts many other butterflies, bees, hummingbirds, and moths.

[ Reply to this comment | Give a thumbs up ]

Posted by Chillybean (Iowa - Zone 5a) on Jul 30, 2015 12:38 PM

The Swamp Milkweed was one of my first native plants; put in a wet spot in our yard in spring 2012 as seedlings. Later that summer it was covered in the non-native Oleander Aphids. To my surprise, they came up the next spring and even bloomed, but that was the last I saw of them.

What a surprise! In a drier area of our yard, some came up this spring (2015). I sowed seeds in that patch in 2013 and they must've taken that long to germinate. There are three plants and they all have flowers! Monarch eggs have already been laid and the larvae are consuming this. So far, no sign of the aphids, but I check the plants regularly.

[ Reply to this comment | Give a thumbs up ]

Posted by jmorth (central Illinois) on Nov 6, 2011 11:51 AM

Habitat preferred - low, wet areas in prairies, borders of marshes, ponds, and ditches. Monarchs really love them.
Interesting seeds and seedpods.
Wildflower.

[ Reply to this comment | Give a thumbs up ]

Posted by SongofJoy (Clarksville, TN - Zone 6b) on Jan 15, 2012 4:43 PM

Pink Swamp Milkweed looks a lot like Butterfly Weed except that the mid-summer flowers are rosy-pink and plants have a succulent texture. Growing about 3 feet tall, this perennial needs full sun and can take, but does not require, boggy conditions. It is a butterfly magnet.

[ Reply to this comment | Give a thumbs up ]

Plant Events from our members
christine2 On April 14, 2017 Obtained plant
7
SCButtercup On June 4, 2014 Bloomed
flaflwrgrl On March 27, 2015 Seeds sown
Direct sown.
Catmint20906 On July 27, 2015 Bloomed
lovesblooms On April 1, 2015 Obtained plant
planted 2x
MunchkinsMom On October 17, 2016 Obtained plant
Dogwood eBay 2 1/2" pot Dormant $1.75 About 3" tall
dave On March 16, 2017 Seeds sown
dave On January 29, 2017 Maintenance performed
Placed in moist paper towel in a ziplock bag and placed in the fridge.
bzrhart On May 7, 2017 Obtained plant
» Post your own event for this plant

Discussion Threads about this plant
Thread Title Last Reply Replies
Asclepias incarnata by virginiarose Nov 4, 2013 11:25 AM 1
Information missing from your web site by Nymphaea Jan 26, 2016 4:01 PM 1
This was given to us, but I have no idea what it is by nestof3 Oct 9, 2017 3:38 PM 22
Plant identification by idn Jul 7, 2017 11:15 AM 5
July 2017 Butterflies, Moths & Larva by krobra Aug 6, 2017 9:53 PM 223
Milkweed ID Needed by jimard8 Jun 25, 2017 8:53 AM 8
What happened to my milkweed? by tx_flower_child Jun 16, 2017 12:37 PM 3
Bee Friends And Other Garden Guests - Chapter 8 - 2017 by wildflowers Aug 2, 2017 7:29 AM 401
Chicagoland Annual garden swap 2017 by oerickson Aug 25, 2017 10:41 AM 303
Growing Milkweeds by luvsgrtdanes Oct 26, 2017 7:49 PM 371
Milkweed Forum by luvsgrtdanes Jan 16, 2017 2:36 PM 14
swamp milkweed by swjanet48 Sep 24, 2016 3:22 PM 1

« Add a new plant to the database

» Search the Milkweeds Database: by characteristics or by cultivar name

« See the general plant entry for Milkweeds (Asclepias)

« The Milkweeds Database Front Page

« The Plants Database Front Page

Today's site banner is by joannakat and is called "False Sunflower"