The key to growing miniature roses indoors is to repot them as soon as you bring one home. Normally I would tell anyone to wait for a few days to adjust, but with roses I encourage everyone to do this. The pots that most miniature roses comes in is way to small, roses needs lots of room for their roots. Repot them in a pot that is 3 times larger than their root ball. They should be watered well, in fact you’ll have to water them just about every other day. Just like the outdoors, the roses loves water as well as they do indoors. After their blooms are spent cut the stem down to where their is a mature leaf, such as a leaf with 3 to 4 leaflets on it, this will encourage faster bloom production.
This bloom that is forming on my miniature rose is the third set of blooms since January. I don’t feed them until I place them outside, and use only rose food at half strength. Miniature roses are fast growers, this photo of the roses went from a 4″ pot to a 10″ pot in 3 months and grew 3 times it’s original size in the matter of 3 months. And if they are kept happy they will continue to bloom all year indoors and outdoors.
Here is a photo of my Yellow Miniature Rose.
And the pink Miniature Rose.