Authentic Wisconsin.  Rattlesnake Master - Eryngium yuccifolium


Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin on July 22, 2021.


Above: Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin (7/22/21).


Rattlesnake Master - Eryngium yuccifolium

Rattlesnake Master ia a native plant that likes full sun and grows in meadows, prairies. Rattlesnake Master can grow from 1 1/2'- 4' tall.

The white/green globe-like flowerheads are arrayed in an orbital cluster at the end of a tall, smooth stalk. Each flower head has numerous small flowers with 5 white petals. These flowerheads turn pinkish/purplish in the fall before turning brown.

Blooms July-August.

Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin on July 22, 2021.


Above: The waxy, spined leaves of Rattlesnake Master are mostly basal, long and cactus-like.


Other names: Button eryngo.

For more information on the Rattlesnake Master, visit Wikipedia.

Or, visit the UW-Madison Wisconsin Herbarium online virtual flora website page on Rattlesnake Master.

Or, visit the U.S. Forest Service "Plant of the Week" website page on Rattlesnake Master.


Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin on July 22, 2021.
Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin on July 22, 2021.
Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin on July 22, 2021.
Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin on July 22, 2021.
Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin on July 22, 2021.
Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin on July 22, 2021.
Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin on July 22, 2021.
Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin on July 22, 2021.
Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin on July 22, 2021.
Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin on July 22, 2021.
Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin on July 22, 2021.
Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin on July 22, 2021.
Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin on July 22, 2021.
Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin on July 22, 2021.
Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin on July 22, 2021.
Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin on July 22, 2021.
Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin on July 22, 2021.
Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin on July 22, 2021.

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Wisconsin Wildflowers


Rattlesnake Master
Eryngium yuccifolium


Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin on July 22, 2021.

Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin on July 22, 2021.

Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin on July 22, 2021.

Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin on July 22, 2021.

Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin on July 22, 2021.

Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin on July 22, 2021.


Above: Rattlesnake Master near UW Arboretum Visitor Center in Madison, Wisconsin (7/22/21).


Rattlesnake Master in UW Arboretum native gardens in Madison, Wisconsin on August 2, 2021.


Above: Rattlesnake Master in UW Arboretum native gardens in Madison, Wisconsin (8/02/21).


Rattlesnake Master (Eryngium yuccifolium) specimen collected in Dane County (Dunkirk Township) on Spetember 29, 1969.


Above: Rattlesnake Master (Eryngium yuccifolium) specimen collected in Dane County (Dunkirk Township) on Spetember 29, 1969.


Rattlesnake Master (Eryngium yuccifolium) illustration circa 1913.


Above: Rattlesnake Master (Eryngium yuccifolium) botanical drawing circa 1913.



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