May be semi-parasitic on the roots of other plants which makes it challenging to grow. Best planted near a potential host such as an oak. May die back , Tolerance, Tolerant of occasional/brief inundation such as can occur in storm surges. Moderate. Tolerant of salty wind and may get some salt spray. Exposure t , Considertions, Has thorns. , Wildlife, Birds and other wildlife will eat the fruit. , Habitat, Scrub, xeric hammocks, swamps. , Did You Know?, Showy flowers, Showy fruits, Thorns Attracts pollinators, especially bees.  Documented bees in clude Agapostemon splendens, Augochloropsis sumptuosa,

According to Kew Gardens, it is from Central America and probably Cuba and Florida.   After going through the photos and labels for specimens in the S , Tolerance, Unknown Some tolerance to salty wind but not direct salt spray. , Considertions, Noted for being weedy. , Habitat, Disturbed. Old orange groves, pasture, roadsides. May occur naturally along the west FL coast including shell mounds and dunes . All records for in , Did You Know?, Showy flowers

Specimen plant, screen plantings, sometimes with unusual or weeping form. , Tolerance, Not salt tolerant of inundation by salty or brackish water. Low/no tolerance of salty wind or direct salt spray , Considertions, Thorns. , Wildlife, Birds and other wildlife consume the fruit.  Used as browse by deer and rabbits. , Habitat, Dry sites. Open woods, mixed woods, sandy pinelands. , Did You Know?, Showy flowers, Thorns Larval food for hummingbird clearwing moth(Hemaris thysbe), striped hairstreak butterfly(Satyrium liparops), and blinded sphinx

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.