pepper23 said:Always do your research when you go to buy a plant. I always look on my phone and use the database here to find out if it's hardy or not before buying it. You do have a one year guarantee so I would keep the receipt and give the plants until next year and see if they come back. Mulch them good and they might surprise you.
But in saying all that our resident expert will be able to tell you more. @ViburnumValley does this one ring a bell for you?