The genus name honors the English botanist William Vernon, who did fieldwork in North America. Back of a moist wildflower garden. Can also use on the , Tolerance, Not salt tolerant of inundation by salty or brackish water. Some tolerance to salty wind but not direct salt spray. , Habitat, Exposed sand and gravel bars of streams during low water, stream banks, hydric to wet mesic pine flatwoods. Rich soils. Ruderal. , Did You Know?, Showy flowers Nectar attracts butterflies and native beens.  Larval host for spring azure butterfly.

This is a wetland plant, but it will do well once established in a moist garden setting. Moist wildflower gardens. Easily grown along streams. , Tolerance, Tolerant of inundation with brackish water Some tolerance to salty wind but not direct salt spray. , Habitat, Riverine swamps, riverine marshes, open wet prairies. , Did You Know?, Aroma, fragrance, Showy flowers Pollinated by sphinx moths. Larval host for Spanish moth a.k.a. convict caterpillar (Xanthopastis timais)