Very robust.  Forms large patches.  Given its potential to be very tall, it may needs to have support from adjacent plants.   Data on salt tolerance c , Tolerance, Not salt tolerant of inundation by salty or brackish water. Some tolerance to salty wind but not direct salt spray. , Wildlife, Seeds eaten by small birds such as finches. , Habitat, Forests , Did You Know?, Showy flowers Attracts bumble bees, butterflies Larval host for the silvery checkerspot, found only in extreme north Florida.

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.