They seem to be popular in the East and New England, although I do not know. I noticed them in old pictures from about 1970. (My Pa enjoyed photography, and got many pictures of historic Williamsburg while in Virginia back then.) They seem to be popular there now too. I have seen them only on a few occasions here, and was not impressed with the dark purple color. I only recently saw the rich blue color. Renee’s Garden is my neighbor, and happens to sell ‘Pride of Gibraltar’ seed.