Eryngium yuccifolium - Rattlesnake Master

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Rattlesnake Master is a warm season perennial native wildflower that grows well on wet or dry to mesic prairie soil. Plants grow 2 to 6 feet tall from a short, thick rootstock. The bluish green basal leaves are up to 2 feet long and 1 1/2 inches wide. The leaf bases clasp the single, erect stem. Flower heads are on stout peduncles at the tip of the stem. Each nearly spherical flower head is from 1/2 inch to 1 inch in diameter and is made up of small flowers.

Whitish bracts stick out sharply from the flowers, which give the flower head a rough, prickly feel and appearance. The heads have a honey like scent and are in bloom June to September. Individual fruits, which mature in the flower head, are less than 1/10th of an inch long.

Eryngium is Greek for "prickly plant" and yuccifolium is Greek for "yucca leaves".

Look for this native wildflower in our Butterfly / Hummingbird Native Seed Mix, Midwest Wildflower Native Seed Mix and our Native Tall Grass and Wildflower Seed Mix.

How To Plant Rattlesnake Master Seeds:

Direct sow seeds into prepared soil in late fall once soil temps are below 50 degrees (usually mid to late November). Can also be planted in winter during natural freeze/thaw cycles and early spring. Plant shallow, no deeper than 1/8 to 1/4 inch deep and lightly rake to work seed in. Plant in full sun. Can take up to 3 growing seasons to fully establish.

Seed Info

Seed Envelopes contain approximately 0.02 ounces of seed and cover about 5 to 10 square feet.

Product Details

Flower Color: White

Height: 3 to 5 Feet

Light Requirements: Full Sun

Soil Hydrology: Mesic to Wet Soils

Bloom Time: June to September

Plant Type: Perennial

Stratification: Cold Moist (CM) 45 Days

Attracts: Birds, Bees, Butterflies

Product Code: ERY01F