I am rooting cuttings in Jon's alternative method, the 3" x 7" bags, using 90% perlite and 10% sphagnum peat moss, set on a tub on a propagation mat set to 85F. This allows me to get a lot of cuttings started in a pretty small space. Before they get very root bound, I have potted them up and moved them into my greenhouse which gets down into the low 40s at night and up to 90 at day. I used 1 gallon pots until I ran out and now using my 4" wide by 12" deep treepots from Stuewe, using the Miracle Grow potting mix (it's worked okay in the past and Costco has large bags of it for $9.99).