I have no idea how long it takes for them to root, but I would guess a good couple of weeks. Just like other succulent cuttings, I would not give them any water until they show roots.

Maybe someone with more experience will comment :D

I've been rooting a few lately. I just sat them on pumice and the roots started emerging within the week. I didn't water them.

i also one in a regular potting mix, sat it aside and forgot all about it. It rooted firmly and still didn't need watering after about a month or so. I think I misted the soil once when I potted the cutting.

and I have one sitting in a dish of perlite and coir. It is putting out roots as well. This one I do most periodically because it a bit drier than the others were when they were made into cuttings.

Id say, then, they will put out roots in pretty much environment but they don't need to be watered heavily. Their bases can rot very easily.

I started several species in a cactus soil mix with 50% pumice, and I don't think I have roots yet, after 2-4 weeks. I may shift some other to the pumice method.

Pls remember these are rain forest cacti, not arid land. I'd suggest you try something lighter like African Violet mix (AV ) &/or bark types.

IME, C&S mix w/ perlite was too heavy for holiday cactus, mine did better when combined w/ AV mix (lighter & fluffier). I'm now adding some bark to my tropical mixes as well.

Yes, I'd water them in a day or 2 later, they're tropical. Maybe just spray lightly around the plant onto the mix, not the plant itself & definitely not the base of its cutting.

Do you have enough cuttings?

Try a few just in water if you have.

Karen: They seem to really like the bark mix a lot.

Can I ask what part of the country you're in?

I wouldn't use potting soil, repeating, I'd use AV soil, perlite & small bark (I use ReptiBark from the pet store).

I'm newish w/ bark, just learning, but 1/3 each will be a good start for you, I'm sure.

Not much sun? Have you tried Hoya or the Asclepiads?