White Milkweed (Asclepias perennis) in the Milkweeds Database

Common names:
Give a thumbs up White Milkweed
Give a thumbs up Swamp Milkweed
Give a thumbs up Aquatic 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: Wet
Wet Mesic
Soil pH Preferences: Slightly acid (6.1 – 6.5)
Neutral (6.6 – 7.3)
Minimum cold hardiness: Zone 6a -23.3 °C (-10 °F) to -20.6 °C (-5 °F)
Plant Height: 2 to 3 feet
Plant Spread: 12 inches
Leaves: Other: Leaves and stems exude a milky white sap
Flowers: Showy
Flower Color: White
Other: Pink overtones in bud
Bloom Size: Under 1"
Flower Time: Late winter or early spring
Late spring or early summer
Late summer or early fall
Suitable Locations: Bog gardening
Wildlife Attractant: Bees
Other Beneficial Insects: Wasps, Moths
Resistances: Deer Resistant
Rabbit Resistant
Flood Resistant
Toxicity: Other: All parts of plant are toxic if ingested. Sap may cause contact dermatitis.
Pollinators: Moths and Butterflies
Miscellaneous: Goes Dormant


Grow Milkweed and Help Save the Monarch ButterfliesGrow Milkweed and Help Save the Monarch Butterflies
September 23, 2015

Could the monarchs one day actually go extinct? It's not unheard of. The loss of milkweed is directly related to the loss of monarchs. Let's all grow milkweed and preserve this majestic species of butterfly.

(Full articleno comments)
Give a thumbs up

Photo gallery:

Plant Events from our members
aspenhill On May 4, 2012 Obtained plant
DG David (greenthumb99) and Pat (ecnalg) - qty 2
» Post your own event for this plant

Discussion Threads about this plant
Thread Title Last Reply Replies
Oops by plantladylin Jun 21, 2017 6:41 PM 1
Asclepias in East Tennessee? by dave May 2, 2017 4:20 PM 5
Growing Milkweeds by luvsgrtdanes Jun 15, 2019 12:49 PM 439
Feb. 4 (Saturday) 2017 "Think Spring!!" Seed Swap in Frederick MD by critterologist Feb 12, 2017 11:05 AM 110
Florida Wildflower Foundation looking for photos by mellielong May 19, 2016 8:39 AM 0
2016 Spring Plant Swap Chat by critterologist May 11, 2016 1:22 PM 579

« 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 Lestv and is called "The Peony Helper"

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.