Although it has square stems and opposite leaves like members of the mint family (Lamiaceae), this is a member of the daisy family, but it has no ray , Tolerance, Not salt tolerant of inundation by salty or brackish water. Some tolerance to salty wind but not direct salt spray. , Considertions, Can get rangy and may need pruning. Reseeds, so plant it where that's not a problem. , Habitat, Edges of upland hardwood forests, hydric hammocks, maritime hammocks, pine flatwoods, pine-oak-hickory woods, calcareous hammocks, coastal hammocks, o , Did You Know?, Showy flowers Heavily used by butterflies, skippers, bees, and wasps for nectar.  This plant is an insect magnet.

Found naturally in Florida in glades, which have marly soils, and in Alachua County, in shallow sands over marl deposits that cover the underlying lim , Tolerance, Not salt tolerant of inundation by salty or brackish water. Low/no tolerance of salty wind or direct salt spray , Habitat, Upland mixed forest. Found in edges or understory and on roadsides. , Did You Know?, Showy flowers Larval Host to the checkered-skipper (Pyrgus communis). Attracts bees.

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.