Eryngium prostratum

Category: Sun Perennials
Family: Apiaceae
Origin: southeastern US
Evergreen: no
Flower Color: blue
Bloom Time: summer to freeze
Height: 2 inches
Width: 2 ft
Exposure: sun to part sun
Irrigation: low to bog
Cold Hardiness: -30 F
Description: This creepy little riparian bog matt bears no resemblance to its eryngium brethren. Though home to hydric areas, it can surprisingly thrive in part shade in a fairly dry location. You'll fall on love with the tiny blue cone-shaped flowers. Natural habiatat includes swamps, bottomland forests, pond margins, streambanks, fens, swales and pastures.
Links:wildflower.org plants.USDA.gov