Coontie Palm (zamia pumila) | Florida Nursery MartThe Coontie Palm is Florida's only native cycad. It resembles a small palm and offers a lush tropical look. Coonties are drought resistant, easy to maintain, and are relatively salt tolerant. Coontie Palms are also the host plant for the rare Atala butterfly caterpillar.
Five White Pampas Grass - 5 Evergreen Perennial Plants - Cortaderia selloana
Helianthus debilis (dune or beach sunflower; get "East Coast" kind as it is shorter - the West Coast kind is taller) - sun/ls, 1-1.5 feet x 10-15' radius spread, fast growth, yellow flowers most year, well drained, drought tolerant, no water once established, easy to trim. Cons: can get a bit ratty over winter, overruns small plants and may need to replenish from time to time (die after couple years). FLORIDA FRIENDLY recommended.
Stachytarpheta jamaicensis, Blue Porterweed, is a wonderful flowering ground cover. Native to South Florida, it stays low, usually under 1ft., grows best in sun to light shade. A butterfly magnet - larval host & nectar plant for many butterflies, and bees love it. Once established, no irrigation is required.