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What is it? Rattlesnake Master, also known as Eryngium yuccifolium, is a perennial herb of the parsley family

Native to where?  It is native to the tallgrass prairies of central and eastern North America.

Hardiness Zone: Plants are hardy from USDA Hardiness Zones 4 to 9.

What does it look like? It grows up to 5 feet tall. This unique wildflower is best known for its bristly, bluish-green, spherical flowers.

Bloom Time: The flowers are produced in June, July, and August.

Growth Habit: The root system consists of a central taproot surrounded by thick fleshy fibrous roots.

Growing Conditions: It prefers full sun in dry to medium soil of clay, loam, or sand.

Environmental Benefits: The flowers attract many insects, including bees, flies, beetles, butterflies, and wasps. The highly textured flowers and leaves are unpalatable to both deer and rabbits.  


Image Source:

By Eric Hunt - Own work, CC BY-SA 4.0,

Rattlesnake Master

  • Plant Pickup Day is Saturday, May 18 at Nanny Park, corner of 5th Street and Oak Street in Baraboo, from 9 am to 12 pm. 

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