Specimen plant. Forms a large rosette of spine-tipped leaves. Flower stalks rise to 6-8 ft.

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 comes mostly from northern sources where the source of salt is winter road de-icing. Background plant as tall.

Wild petunia's flower only last for a day, but they have a very long flowering period, starting in early spring and going strong through the fall. Please use this Florida native instead of its widely-sold relative, the invasive Mexican petunia. Groundcover along with other low-growing wildflowers.

The genus name honors the English botanist William Vernon, who did fieldwork in North America. Moist wildflower garden. Also useful to naturalize along the edges of ponds, wetlands, and streams.

Specimen plant, edge, understory shrub. Can be grown in a large container.