Here is the red Valentines Day rose that I bought in early March and bare- rooted, then up- potted on 16 March. The first new flower appeared about a week ago.
I wasn't sure I liked it but now... a very nice, reblooming miniature potted rose.
It can't take full sun. The flowers get sunburn.
I'll add to this post, after a doctor's appointment yesterday, I stopped at the Safeway next door. I thought this one there, marked down (post Mothers' day) would be fun to treat the same way.
I didn't wait this time. The original peat medium is just too finicky. It dries out too fast, sometimes overnight, leading to dead flowets and crispy leaves. I bare-rooted it by un- potting and swishing around in a bucket of water.
There were three plants. A good number for a group pot. Not a lot of roots. No wonder they wilt so quickly in peat.
I planted in regular potting soil (I use Black Magic).
I try to spread the roots out as much as possible. Also, I went from about 4" pot to about 6" and a bit deeper.
Watered in. They can be floppy at first, so a stake might be a good idea. I didn't but I might tomorrow.
Bare rooting while in full bloom seems drastic, but each time I do it, the plant doesn't miss a beat. The new soil and larger volume to keep the current flowers blooming longer and set it up for future success.
Edit: From the list of choices on the container, this is Felicitas Kordana Light Pink. I can't be 100% certain, but it's the closest match. The grocery store plants are meant to enjoy and discard, so not sold with cultivar names.
Edit: corrected some typos.