Asclepias tuberosa

Popular Milkweed


Photo: Melinda Fawver


There are many names for Asclepias tuberosa, which is simply Milkweed.  Also called Butterflyweed and Butterfly Milkweed, there are more than 150 known species.


From the Asclepiadaceae, or milkweed family, other names include Pleurisy root, Chigger Flower and Orange Milkweed.  With the exception of Orange Milkweed, all Asclepias tuberosa species produce a milky sap that are known to be toxic to humans.

The overview of these showy plants:

  • Milkweeds are mid-sized perennial plants that grow anywhere from 1 to 3 feet.

  • Plants grow well in drought and low water conditions.  Plants do prefer slightly moist, well drained soil types

  • Prefers full sun.

  • Can be propagated from seed and root cuttings and wind dispersal with the seedpod traveling in late summer and early fall.  Root cuttings should be taken in the fall by cutting the taproot into 2-inch sections and plant each section vertically, keeping the area moist.  It can take 2-3 years for the plant to begin thriving.

  • Plants become well established and can be divided.

  • Grows in planting zones 4-9.  This includes most of the United States and Canada.

  • Flowers bloom May through September throughout the summer and late summer.

  • Deer resistant.


Asclepias turberosa is very conspicuous offering flower colors of orange, yellow and red. Plants don't work well with formal garden layouts but rather more casual, natural gardens.  It can be found in nature growing in prairies, meadows and other open woods, canyons, and some  hillsides.  See butterfly meadows to understand the difference between these.


Milkweed is a staple plant for any butterfly garden.  Not only does it attract butterflies for its rich nectar, it also is a great Hummingbird plant.

Photo: Mark Herreid






Asclepias tuberosa very often gets Aphids.

A natural elimination of aphids is releasing ladybugs.  Other options include spraying the plants with soapy water or hosing them with a strong blast of water from the hose.




FYI:

The name Pleurisy Root comes from the fact that the root is chewed on by Indian tribes to cure pleurisy, also known as pleuritis.  This is inflammation of the pleurea membranes that surround the lungs.  Chewing on this tough root offers relief for various pulmonary issues. 

Because the root and milky sap are not edible, chewing in large quantities can be toxic.  Symptoms include spasms, vomiting, weakness and mental stupor.






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