Kim - I've successfully grown grocery store minis outside, but never inside. I never water them enough for their tastes! I water them pretty heavily & frequently their first year in ground for me, and I've had about an 80% success rate. But I can't help you if you are gonna pot them up.. I suck at potted plants. LOLLL!!! Here's my minibed. Some of these are grocery store roses, some are ones I ordered.
