Common Name: Button Rattlesnake-master
Latin Name: Eryngium yuccifolium
Habit: A native, perennial, wildflower that grows to a height of about 3 feet when in bloom.
Leaves: Few upper leaves, but those that may be present are alternate and linear with parallel leaf veins. The basal leaves are stiff and resemble a yucca. Linear to lanceolate in shape
Flowers: The greenish white flowers appear in spiky looking, globe shaped, heads.
Habitat: Dry pinelands and open forests.
Landscape: It grows in full sun to part shade with average to moist soils.
Range: It is native to the following states – Alabama, Arkansas, Connecticut, Florida, Georgia, Iowa, Illinois, Indiana, Kansas, Kentucky, Louisiana, Maryland, Michigan, Minnesota, Missouri, Mississippi, North Carolina, Nebraska, New Jersey, Ohio, Oklahoma, South Carolina, Tennessee, Texas, Virginia, and Wisconsin.
It grows in zones 3a to 9b.
Wildlife use: Bees and butterflies use the flowers as a nectar source.
It is in the Apiaceae, or celery, family, and is purported to be a larval host plant for the eastern black swallowtail butterfly. However, I have never seen a caterpillar consuming these plants. If you do please email me and let me know.