I'm glad I saw this. I could not resist a pretty coral (peach) mini rose from Publix during the winter (and did not try very hard to resist). I found it to be 3 little plants, each of which is now in its own pot (I think they are 8 inch pots). After reading this I am going to leave them in those pots for this year.
Is it correct that they would not be hardy outside during the winter on a porch? If it would be necessary to move them inside then, they will just have to stay in all the year as I don't like moving plants in and out of the house. Over the years I have found too many hitchhikers coming in with the plants. So now I have the "in house" buddies and the "outside" buddies and they don't mix. So - have you found these little plants to be cold hardy (down to the 20s)?