I have been struggling with miniature roses for two years now and this winter I have finally seemed to get it right. I bought some wonderful red miniature roses last spring and replanted these in a clay pot, when it was warm enough I took them outside and left them there until it was almost a freeze, then I brought them in. Truth be told I did not do much other then water them on occasion, I put them on the ground in an area with bright morning sun, but full afternoon light. In the past I put the pot higher on the edge of a raised bed and thy dried out fast. At frost I brought them in and placed them in full sun by the window, but it is very cold there and they like it. I only water once a week and have nice green leaves and the stalk part is green. Just enough to completely wet the entire soil. The plant is definitely alive and I know a day or two in the spring heat will make them bud.
One huge difference I did, was in the past I would prune the dead off, this time I left it, and it seems t have made a difference. I can hardly wait for spring to get here, this weekend is suppose to hit the 60's so I will be doing outside things to start the planting season. I am curious though, for anyone that has experience with the miniatures, I notice when I leave the roses outside the leaves are so much darker, almost red in color, is this the normal state or perhaps I need to do something more?