I didn't even do that much.  I threw them in only peat moss.  I have come to the conclusion that Figs will grow in almost any medium. I's the conditions that matter.

I agree with Dominick, after the rooting and cupping stage, it "almost" dosent matter what medium you plant them in, as long as it's some good quality product. All my trees simply get planted in Miracle Grow Moisture Control Potting Mix. That goes for my in-ground trees as well as my potted trees.  Why did I choose that particular brand of soil?  Because back when I started growing fig trees(about 6 years ago), I was in the Home Depot Garden Department trying to choose from the many types of soil that they offer, and I finally picked the Miracle Grow because I liked the blue bag that it was packaged in(it was that simple). And since then all my trees have thrived in that growing medium. 

Vince, I thank you for sharing the inverted 32 oz cup and lid. I had been using them but not inverted with another 32 oz on top. This
is much, much better. I have a few that are way to tall for the 24 oz top cup so I use a piece of cane with plastic covers the newspaper
for my top. Works great.

Mike,
   When my cuttings grow out with branches and leaves to where they seem cramped, then I remove the 24oz humidity dome and never cover them again.  If the cuttings that I receive are too long to fit under the 24oz humidity dome then I cut them in half trying to leave at least 2 or 3 nodes on each half.  Then I grow two trees.

The comfort in using the sphagnum/baggie is you KNOW there are roots!  The second comfort comes when you cup them up, and the roots start showing around the inside of the cup large and strong, and green shoots get leafy!  After that, planting in a 3 gallon opaque pot is a no brainer.  You KNOW you have a living, growing fig tree. 

There's a lot of mystery and patience required starting with a cutting in a 3 gallon pot.  Are there roots?  When will I see a sign of life?...

Suzi

Exactly, Suzi.....I need to see some "proof of life" so I can sleep better at night....

Sticking a cutting in a pot of dirt is no different than sticking in the ground.  

I'd have to agree with Vince.  As long as you use good quality materials the cuttings should do well.  I was getting a little (no, alot nit picky) about finding the "perfect" rooting mediums that others were using and doing well with.  Couldn't find it here in big ole Houston easily, so I finally gave up the hunt and bought Miracle Grow perlite and Organic Choice potting mix.  My cuttings are doing really well in materials that should be readily available to everyone.  I'll also add a qualifying statement, what works for me may not work for you.

Dominick,

You are so right!  This is why, when people like UC Davis send these huge, long cuttings, I cut them in half or thirds, and try a couple rooting methods with them.  The fun of putting them in the ground is, one day you survey the land, and see huge leaves that are NOT typical weeds, and you know..... FIG!  Nice little surprises life dishes out!  BUT, if you used the UC Davis Tag, it will have faded, and you will be clueless on which fig has burst from the earth.  Strong advice here!  If you must plant in the ground, mark well!  This advice is the same for Wine Grape cuttings too!  They will easily grow in ground, but if you don't mark them well, you just won't know!

Suzi