Authentic Wisconsin.  Butterfly Milkweed - Asclepias tuberosa


Butterfly Milkweed in Thoreau Rain Garden on August 28, 2020.


Above: Butterfly Milkweed in Thoreau Rain Garden in Madison, Wisconsin. (8/28/20).


Butterfly Milkweed - Asclepias tuberosa

The Butterfly Milkweed is a native that grows from 1 to 3 feet and blooms from July to September.

Butterfly Milkweed flowers are orange to yellow. Flowers are about 3/8-inch across, and are 5-parted crown with curved horns projecting from the center of each of the 5 cylindrical hoods. They also have 5 downward-curved petals flare out beneath.

Other Names: Butterfly-weed, Orange milkweed.

Butterfly Milkweed in Thoreau Rain Garden on July 4, 2019.


Above: Butterfly Milkweed in Thoreau Rain Garden in Madison, Wisconsin. (7/04/19).


For more information on the Butterfly Milkweed, visit Wikipedia.

Or, visit the UW-Madison Wisconsin State Herbarium website page about Butterfly Milkweed - Asclepias tuberosa.


Butterfly Milkweed on the shore of Lake Wingra in Wingra Park on August 27, 2020.
Butterfly Milkweed on the shore of Lake Wingra in Wingra Park on June 27, 2020.
Butterfly Milkweed on the shore of Lake Wingra in Wingra Park on July 29, 2019.
Butterfly Milkweed on the shore of Lake Wingra in Wingra Park on July 10, 2019.
Butterfly Milkweed on the shore of Lake Wingra in Wingra Park on July 8, 2019.
Butterfly Milkweed on the shore of Lake Wingra in Wingra Park on July 7, 2019.
Butterfly Milkweed  in Thoreau Rain Garden on July 4, 2019.
Butterfly Milkweed on the shore of Lake Wingra in Wingra Park on July 29, 2019.
Butterfly Milkweed on the shore of Lake Wingra in Wingra Park on July 29, 2019.
Butterfly Milkweed on the shore of Lake Wingra in Wingra Park on June 27, 2020.
Butterfly Milkweed on the shore of Lake Wingra in Wingra Park on June 27, 2020.
Butterfly Milkweed on the shore of Lake Wingra in Wingra Park on June 27, 2020.

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Wisconsin Wildflowers


Butterfly Milkweed
Asclepias tuberosa


Butterfly Milkweed on the shore of Lake Wingra in Wingra Park on June 27, 2020.

Above: Butterfly Milkweed on the shore of Lake Wingra in Wingra Park. (6/27/20).


1969 Butterfly Milkweed  illustration.


Above: 1969 Butterfly Milkweed illustration USDA FS.


 Butterfly-Weed  (Asclepias tuberosa) illustration by Alice Lounsberry circa 1899.

Above: Butterfly-Weed (Asclepias tuberosa) illustration by Alice Lounsberry circa 1899.


 Butterfly-Weed  (Asclepias tuberosa) illustration circa 1899.

Above: Butterfly-Weed (Asclepias tuberosa) illustration circa 1899.


1913  Butterfly-Weed illustration.


Above: 1913 Butterfly-Weed illustration.


Butterfly Milkweed specimen collected July 15, 1974 in Grant County near Platteville on a bluff.

Above: Butterfly Milkweed specimen collected July 15, 1974 in Grant County near Platteville on a bluff.


Butterfly Milkweed.



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