Pat, maybe your ROSY RETURNS was going through summer dormancy when you received it. That's where a plant dies back to the ground when stressed by summer heat and/or maybe not enough water -- but then it comes back when conditions improve. I had not heard of it until last year, and I kept thinking all these plants had died in our summer heat -- and then they came back! One of mine that reliably goes through summer dormancy is CROCODILE SMILE every July/August, and it looks just like your picture.
Mayo, I'm certainly not an expert on this, but I believe tissue culture is when they literally take small amounts of tissue from a plant and then grow new plants from it. And I've read complaints that the plants are often different and don't perform as well because of mutations or something. Hopefully you'll get a better response than this from someone who really knows...
