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.

Specimen plant. Forms a large rosette of spine-tipped leaves. Flower stalks rise to 6-8 ft. , Tolerance, Not salt tolerant of inundation by salty or brackish water. High. Can tolerate significant and ongoing amounts of salty wind and salt spray without i , Considertions, Spine-tipped leave are very sharp. , Wildlife, Provides wildlife cover , Habitat, Cultivated. Dry sites. , Did You Know?, Showy flowers, Interesting foliage Pollinated by moths though hummingbirds may be attracted to the nectar.  Larval host plant for cofaqui giant skipp