Eryngium yuccifolium (Rattlesnake Master)



USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service. Provided by NRCS National Wetland Team

Where Commonly Found:  Meadows, fields, disturbed land.

How to Identify:
(For unfamiliar words: Wikipedia Glossary of Botanical Terms).
Go Botany Key for Eryngium yuccifolium.
Missouri Botanical Garden’s description of Eryngium yuccifoloium.  Click on more images.
Flower Type:  Prickly balls of greenish white flowers at stems ends and sometimes from axils of upper leaves.  Individual flowers are about 1/2″ – 1″ across with 5 white petals, a divided white pistil and white stamens with light brown anthers.  A star-like rosette of small leaves occur just below the flower ball.  Scent in bright sun is considered a sickly honey smell.
Flower Time:  June – September
Leaf Arrangement:  Alternate leaves mostly at the base of the plant with a few smaller leaves along the upper portion of the stout central, unbranched, except near the flowers, stem.  Base leaves wrap around the stem.  Whole plant is bluish-green and hairless.
Leaf Type:  Long, strap-like, narrowly lanceolate leaves, 2-1/2″ long and 2-1/2″ wide, down-ward curved.  Stiff, widely scattered teeth along the margins.
Height: 4′- 5′
Seed Collection: Seeds turn brown when ripe in the fall.  Tap the seed heads to drop the seeds into a bag.  Air dry and store.

Attracts:  Bees, Butterflies, Birds, Beneficial Insects
Use: Garden or Naturalizing
Light:  Full Sun
Hardiness Zone:    USDA Zone Map
Soils: Dry to Moist
Notes:  Eryngium yuccifolium (Rattlesnake Master) is an excellent pollinator and beneficial insect attractor with sword-shaped leaves and long lasting, thistle-like flower heads.  What’s not to like!
NATURALIZED in a bit of CT, native to Central Eastern Seaboard, Midwest so not really native to New England, but the pollinators still love it:   Biota of North America Program (BONAP) – North American Plant Atlas (NAPA).

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