PlantsMilkweeds→Purple Milkweed (Asclepias purpurascens)

Common names:
Give a thumbs up Purple Milkweed
Give a thumbs up Milkweed

General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun to Partial Shade
Partial or Dappled Shade
Water Preferences: Mesic
Dry 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: Unusual foliage color
Other: Can spread somewhat rapidly by rhizomes. This plant is considered by many gardeners to be too vigorous and weedy for borders.
Flowers: Showy
Other: Flowers are a nectar source for many butterflies and leaves are a food source for monarch butterfly larvae (caterpillars).
Flower Color: Other: Rose-pink to purple
Bloom Size: Under 1"
Flower Time: Late spring or early summer
Underground structures: Rhizome
Uses: Will Naturalize
Wildlife Attractant: Bees
Resistances: Deer Resistant
Rabbit Resistant
Toxicity: Leaves are poisonous
Roots are poisonous
Propagation: Seeds: Provide light
Self fertile
Stratify seeds: 3 months at 40 degrees
Suitable for wintersowing
Can handle transplanting
Other info: Easily grown from seed, and will self-seed in the landscape if seed pods are not removed prior to splitting open.
Propagation: Other methods: Division
Pollinators: Moths and Butterflies
Various insects
Containers: Not suitable for containers


Photo gallery:

Posted by SongofJoy (Clarksville, TN - Zone 6b) on Jan 15, 2012 4:51 PM

Occurring widely in the northeast in thickets, open woods, and fields, Purple Milkweed is similar to common Milkweed except that it has much deeper rose-pink flowers and more pointed leaves. Plants form clumps 2 to 3 feet tall and wide and have stout straight stems topped by beautiful mid-summer rosy-purple flower balls. Butterflies LOVE their nectar and Monarch butterfly caterpillars love their leaves. Easy to grow in dry, poor to average soil, in full sun. Plants may seed and form colonies. (Sunlight Gardens)

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Plant Events from our members
lovesblooms On March 1, 2020 Seeds sown
winter sow
lovesblooms From March 3, 2018 to March 10, 2018 Seeds sown
lovesblooms On February 19, 2017 Seeds germinated
lovesblooms On February 4, 2017 Seeds sown
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.
ricelg On January 3, 2018 Maintenance performed
Placed seeds on paper towel moistened with distilled water and sealed in Ziploc bag in refrigerator
MrsBinWY On July 7, 2020 Transplanted
5 with Allium atropupureum and Dutch Iris near corner of garage
MrsBinWY On June 2, 2020 Transplanted
3 by garlic in back where stone path curves around wood shed
MrsBinWY On February 4, 2020 Seeds germinated
4 - move the container to a heat mat, under LED lights
MrsBinWY On December 20, 2019 Seeds sown
WS 16 seeds from Prairie Moon C(30) in milk jug (put outside 12-26-19). Back inside on 1-26-20.
MrsBinWY On February 2, 2019 Seeds sown
WS last of seeds from Mlle.butterfly's 2013G; didn't get germination on these previously (2014 & 2015); brought back inside 5-19-19
MrsBinWY On February 15, 2016 Seeds sown
WS ~20 (all) seeds from duane123's 2014G in milk jug; these germinated, were planted out and came back in 2017 but not in 2018
» Post your own event for this plant

Discussion Threads about this plant
Thread Title Last Reply Replies
Prairie Moon has Purple Milkweed Seeds! by luvsgrtdanes Feb 14, 2019 7:21 PM 1
Prairie Moon Has Purple Milkweed! by luvsgrtdanes Feb 13, 2019 11:47 AM 0
Asclepias purpurascens (purple milkweed) from lower Ohio Valley origin by UrbanWild Feb 9, 2021 11:56 AM 12
Milkweed ID Needed by jimard8 Jun 25, 2017 8:53 AM 8
WTD: seeds/plants of Asclepias purpurascens from lower Ohio Valley origin... by UrbanWild Apr 8, 2018 8:13 PM 5
Chicagoland Annual garden swap 2017 by oerickson Aug 25, 2017 10:41 AM 303
Growing Milkweeds by luvsgrtdanes Oct 15, 2021 9:04 AM 596
Milkweed Forum by luvsgrtdanes Jan 16, 2017 2:36 PM 14
Looking for Asclepias purpurascens seeds by RobinSeeds Aug 10, 2016 10:21 AM 3

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