I always use softwood cuttings, and after removing from parent plant, scrape one side with a knife, nicking the cambium layer to expose it. Dip into rootone and stick into fungal dominant soil they like, with plenty of
compost in it. Surprising how many
root if you keep it moist. Add a little peat moss if you have to, to keep it soft. Keep mulched with
wood chips or something they like similar to that which regulates moisture. Make need a year to root down well
enough to transplant. Also you can take a shovel or axe and cut through roots to those suckers which come off the mother plant, Let them recover six months or so and then transplant.