There's no need to separate the rootings. You can plant your rose(s) as if it were one plant in one pot. Nurseries commonly multi-stick cuttings for the mist house to guarantee a better take. When the whole thing is planted as one rose it does just fine.

Some people "pot-up" their roses, but I have always put my plants into the pot they are going to live in for the rest of their rosy lives and they have thrived. Just make sure they have good drainage and enough sun and don't let them get completely dry.

I also make a practice of washing the underside of the leaves of my potted roses to avoid infestations of spider mites.

When I plant a mini into a pot, I put in about a tbsp of bone meal and a tbsp of 10-10-10 time released fertilizer at the bottom of the planting hole and then don't feed the plant again until I see new growth.

Good luck with your new rose.

Smiles,
Lyn

I agree with roseblush I have rescued 30 of these minis and never separated them . plant them in a permanent large pot or in the ground and enjoy them.
jan

You want a potting "mix" not a potting "soil", the mix will drain faster. When you transplant it, don't be alarmed if it loses leaves, this is called transplant shock and for some roses it is normal. As long as the canes stay green, the plant is still alive.