SCARLET PENTAS
Pentas lanceolata
NON NATIVE – Florida Friendly
2 to 4 feet tall
Fast rate of growth
Full sun to very light shade
Good drought tolerance
An upright, dense perennial with showy clusters of dark red flowers that bloom most of the year.
May be pruned to maintain height and density.
An excellent butterfly attractor.
& BUTTERFLY GARDEN
http://www.garden.bsewall.com/house/Butterfly/butterfly.html