Yes, it seems there are a lot of St. Helena's, ours is named for Santa Elena, the first colonial capital of Spanish Florida. It was founded in 1566 in what is now South Carolina.
According to horticultural zone maps we appear to be in a cooler zone but being a sea island, surrounded by water that is warmed by the Gulf Stream in the winter, we don't get the typical cold weather mainland South Carolina sometimes gets.
C australis are very hardy here and C. fruticosa are *usually* hardy in microclimates. I always take cuttings in the fall, just in case we have an unusually cold winter.
