Best to use medium stock - not the newest or the oldest growth, but nice firm healthy stock in between. Use sterilized scissors - I usually pass it through a flame before snipping off the growth. You can also swab the scissors with Isopropyl alcohol to sterilize. After cutting, a dab of cinnamon on the cut end will help prevent mold & pathogens. Simply plant it in moist soil and leave it alone. It will take a month or two to form roots. Just keep the soil moist. Don't disturb it as it tries to put down roots. You can just plant at the base of the mother plant in the same pot. Success in pretty good, but not 100% guaranteed so you may want to do 2 or 3 cuttings.

Do you mean a Christmas rose aka Helleborus niger?

Best way is to divide far less trouble and they respond well - do this in late Autumn

Did you mean a Christmas Cactus, Emma?

Or do you mean an actual rose, Rosa 'charisma'?

I think she means the Christmas cactus. It's also called the Thanksgiving cactus. Roses in December? I doubt it

For the Christmas Rose (H. niger), you just divide the rhizomes. That's not in season anyway.

To respond, Emma, you just write in the "Add comment" box, as if you were answering your own question. Everyone who has commented will be notified.

H. niger is in flower in many gardens here Paul and the garden centres are full of them, though I suspect they would be a bit later if we had had some colder weather.

Of course you are correct Eileen. I guess your winters are mild compared to mine. I'm accustomed to seeing them bloom alongside the daffodils thanks

the H. orientalis and its hybrids flower closer to Easter along with the daffs. I wonder if that's the one you have Paul.

Yes Eileen, that's the one growing here. I don't have any in my garden, but I see huge drifts growing in public parks. Nobody digs them up - they are completely naturalized, doing their own thing. It's also called "Lenten Rose" because that's when it blooms. I know that's not the one in question here (Merry Christmas).