Vicki,
Thanks for your quick response! A native of NW Penna, we lived in Charlotte for twenty years - just returning to PA about 4 years ago.
Think I will go with Swallowtail's Happy Hour Deep Red - a double which I prefer. Also liked some of their other ones too, but can't buy everything I see - just don't the energy and gardening space that I used to have. Will let you know how I make out with my first attempt of trying portulaca seeds.
Don