The genus name honors the English botanist William Vernon, who did fieldwork in North America. Moist wildflower garden. Also useful to naturalize alo , Tolerance, Not salt tolerant of inundation by salty or brackish water. Some tolerance to salty wind but not direct salt spray. , Habitat, Hydric to moist savannas, openings along streams, wet pastures, floodplains, bluffs, bay swamps. , Did You Know?, Showy flowers Nectar attracts native bees and butterflies.  Larval host for Spring azure.