[Wikipedia] Africa Native, Garden Escapee or Naturalized Elsewhere: Native to the Eastern Cape Province of South Africa, this species has become widely known as an ornamental plant. Today it can be found growing in Australia,[11] escaped gardens and naturalized in some parts of California, Oregon and Florida, in the Mediterranean region of the Europe and in central Mexico. The plant was recently determined to be invasive in California and was listed as a wildland weed red alert.[2] (link added by Mary Ann Machi)