Eryngium Species, Rattlesnake Master, Button Eryngo, Beargrass, Button Snakeroot

Eryngiumyuccifolium

Family
Apiaceae (ay-pee-AY-see-ee)
Genus
Eryngium (er-RIN-jee-um)
Species
yuccifolium (yuk-ki-FOH-lee-um)
Synonym
Sun Exposure
Full Sun
Foliage
Herbaceous
Height
36-48 in. (90-120 cm)
Spacing
15-18 in. (38-45 cm)
Hardiness
USDA Zone 3a: to -39.9 °C (-40 °F)
USDA Zone 3b: to -37.2 °C (-35 °F)
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Danger
Handling plant may cause skin irritation or allergic reaction
Bloom Color
Pale Green
Light Blue
Bloom Time
Mid Summer
Late Summer/Early Fall
Other Details
Category
Herbs
Perennials
Water Requirements
Requires consistently moist soil; do not let dry out between waterings
Foliage Color
Bronze
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Other details
Soil pH requirements
6.6 to 7.5 (neutral)
Patent Information
Non-patented
Propagation Methods
By dividing the rootball
From seed; direct sow outdoors in fall
Seed Collecting
Allow seedheads to dry on plants; remove and collect seeds
Regional

This plant is said to grow outdoors in the following regions:

Auburn, Alabama

Opelika, Alabama

Huntington, Arkansas

Little Rock, Arkansas

Morrilton, Arkansas

Menifee, California

Bartow, Florida

Palm Coast, Florida

Rockledge, Florida

Lula, Georgia

Champaign, Illinois

Divernon, Illinois

Glen Ellyn, Illinois

La Grange Park, Illinois

Machesney Park, Illinois

Jeffersonville, Indiana

Bloomfield, Iowa

Louisville, Kentucky

Taylorsville, Kentucky

Jennings, Louisiana

Monroe, Louisiana

New Orleans, Louisiana

Pollock, Louisiana

Dearborn Heights, Michigan

Watervliet, Michigan

Eveleth, Minnesota

Madison, Mississippi

Cross Timbers, Missouri

Maryland Heights, Missouri

Saint Louis, Missouri

Lincoln, Nebraska

Frenchtown, New Jersey

New Milford, New Jersey

Polkton, North Carolina

Cincinnati, Ohio

Glouster, Ohio

Toledo, Ohio

Bethlehem, Pennsylvania

Downingtown, Pennsylvania

Charleston, South Carolina

Dallas, Texas

Fate, Texas

Merit, Texas

Rockwall, Texas

Burlington, Vermont

Staunton, Virginia

Bryn Mawr-Skyway, Washington

Kalama, Washington

Great Cacapon, West Virginia

Neenah, Wisconsin

Rice Lake, Wisconsin

Westfield, Wisconsin

show all

Featured Videos

Gardener's Notes:

8
positives
4
neutrals
0
negative
Sort By:
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G
Rockwall, TX | May 2018 | positive

Beautiful unique looking wildflower adds great vertical interest. Very happy in my Zone 8a heavy black clay. Made it though the winter ...Read More

C
ROSLINDALE, MA | July 2015 | positive

This long-lived perennial is more architectural than ornamental, and is popular with both native plant enthusiasts and with the Dutch New...Read More

R
Downingtown, PA | December 2013 | positive

I grew it for several years west of Chicago, IL, in two locations, originally ordering it from Prairie Nursery in Wisconsin. Did well, bu...Read More

A
Polkton, NC (Zone 7b) | October 2009 | positive

Collect seeds by removing seedheads in autumn after they turn brown. Break apart seedhead and dry for several days.

J
Katy, TX (Zone 9a) | June 2009 | positive

The information about its water needs is incorrect. This is a prairie plant and is very drought tolerant. It's needs are dry to moderate.

Q
Bloomfield, IA (Zone 5b) | October 2006 | positive

We have had Rattlesnake master for a good 10 years. I have found here in Iowa it did not like the East side of the house where there was ...Read More

M
M
Benton, KY (Zone 7a) | August 2006 | neutral

Cultural information only.

Found they are found in pastures, woods and thickets throughout most of the eastern US from Min...Read More

L
Jeffersonville, IN (Zone 6a) | May 2005 | positive

Self-seeds if you leave the seed-heads on the plants. Seedlings are easily moved, but don't wait too long. Once they're established, they...Read More

J
J
Palmyra, IL (Zone 5b) | January 2005 | neutral

The flowering
heads attract many kinds of insects, including long-tongued
bees, short-tongued bees, wasps, flies, butterfli...Read More

M
Bartow, FL (Zone 9a) | October 2004 | positive

This attractive native plant may be grown through zone 10a. It is a wonderful "starter" for a native plant garden because it is easy to grow.

S
Oklahoma City, OK (Zone 7a) | October 2004 | neutral

The name "Rattlesnake Master" is due to an old myth that the roots could be used to heal rattlesnake bites. It looks a lot like a yucca ...Read More

M
M
Ewing, KY (Zone 6a) | August 2001 | neutral

This plant stumps many beginning wildflower enthusiasts. A member of the carrot family, it looks similar to a small yucca or agave: broa...Read More

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