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Eryngium yuccifolium

Rattlesnake Master is a native species to the tall grass prairies. Leaves of rattlesnake master are parallel-veined, bristly-edged, sword-shaped, medium green leaves (to 3' long) resembling those of yucca. Flowers are greenish-white and tightly packed into globular, 1" diameter heads resembling thistles. The flowering heads attract many kinds of insects
Rattlesnake master prefers dryish, sandy soils, but tolerates clay and shallow-rocky soils. Plants tend to open up and flop in overly fertile soils or in anything less than full sun. This is a taprooted plant which transplants poorly and is best left undisturbed once established.
Use rattlesnake master in a xeriscape garden, perennial border, or native garden. Group plants in naturalized areas for best affect.
Exposure: Sun, part shade
Soil: Tolerates about any soil
Hardiness: USDA Zone 4-10
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