Eryngium yuccifolium
Eryngium yuccifolium
Eryngium yuccifolium
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Eryngium yuccifolium

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Eryngium yuccifolium (Rattlesnake Master) matures to a height of 4' and has white "bristly" flowers. These bristly flowers and coarse leaves make it largely ignored by deer and rabbits.  It is a member of the carrot/parsley (Apiaceae) family, but is very different-looking from the usual umbel flowers and fine-cut foliage of plants in this family.  It is typically found in medium-wet to medium-dry soils and prefers sites with full sun.  It will form a tap root in a short amount of time so once planted, it is best left alone.  Small native bees, moths and flies will nectar on Rattlesnake Master.

The latin name, Eryngium yuccifolium, comes from the fact that the leaves look very much like a Yucca plant.  In the past Rattlesnake Master has been used medicinally by Native Americans as a diaphoretic. The roots have also been used to treat liver troubles.  Other common names include Button Snakeroot, Yucca-leaf Eryngo, Corn Snakeroot, Water-eryngo, Rattlesnake Flag, and Rattlesnake Weed.


Common name is in reference to a former use of this plant as a treatment for rattlesnake bite.

Zone: 3 to 10
Height: 2.00 to 3.00 feet
Spread: 1.00 to 1.50 feet
Bloom Time: June to July
Bloom Description: Pale purple
Sun: Full sun to part shade
Water: Dry to medium
Maintenance: Low
Suggested Use: Naturalize
Flower: Showy, Fragrant, Good Cut
Attracts: Butterflies