I use pure vermiculite for rooting and growing. I would move them to the vermiculite.

Ron

I've also had good luck with vermiculite. In the FAQ it says to use soil or they grow water roots first and then when you transplant to "soil" you have to give them time to readjust. I'm not greedy with my time, so I've started in Vermiculite and moved to soil when I felt like it. Apparently Ron has has success giving them all they need in a vermiculite only medium! I think that's cool!

minibot

I'm certainly no expert, but I personally would leave it alone. In my experience with propogating av's, if it ain't broke, don't fix it. You know what I mean. You know it's not going to make it when the leaf gets all limp and falls over. The ones which are 'still standing' after several days are on the right track, and I personally wouldn't tempt fate, lol! If you'd rather go vermiculite next time, so be it (and you may find you have even better luck) but I wouldn't disturb those you've already started.
Amanda 'romando'

I vote vermiculite, but have found any sterilized seed starting mix to work equally well!! Seems to me I've not always covered mine in most cases , since with high enough humidity you can dispense with the cover, and then have less liklihood of having rot!! They may wilt slightly at first , but usually as soon as they get the earliest roots the leaves will pick up and they're off and running. The average dry winter home though in the north might be a bit too dry, so the cover might be advisable.

I placed some of the leaves in potting mix and some other in a small glass of water for new plants. Both cases seem successful, i.e. the leaves in the potting mix remain green and those in the glass have roots sprouting at the end of the stem. However, I don't know if they really are coming to life. I'd appreciate if someone can post a photo of their leaves so I can compare.
Many thanks.

Haxuan,

Since the leaves haven't died and are producing roots, you are probably fine.

Have you encountered a post that gives the Rachel's Reflections website? It is a favored information source around here because Rachel has posted many pictures of how to do things.

Here is a link that might be useful: Rachel's Reflections

I've started all my AV leaves in regular potting mix...
mix moistened and allowed to thoroughly drain, then I insert the leaf petiole but leave the leaf off the surface and it's back is against the side. Slip all into ziplock and blow air in so that the sides do not touch the leaves..keep in indirect light...every two days or so open to let the old air out and bring new air in.
{{gwi:379784}}
I've started lots of other plant cuttings in straight perlite too, but haven't tried vermiculite...will have to try this :)

Thank you Brambles, I checked out Rachelsreflection and like it a lot. I have found many good answers to my questions already.
I know this weekend will be a busy one for me to experiment with my AVs. I'm so glad I've found this site on Gardenweb and can have good advice from all you guys.