I worked with the MG person who runs our propagation class She recommended taking cuttings when new growth was going on late summer (end of August/early September). We made sure we cut so we had a couple of nodes, stripped the bottom leaves off, then put them into a loose soil mix and covered with a plastic bag to keep moist (I should mention that we had the bottoms of the cutting containers in a shallow dish with just a bit of water in the bottom and the plastic bag covered the entire container).
It took quite a while for the cuttings to root, and I left the plastic bag on the entire time. Once I was sure it was rooted, I kept the plastic bag on for a while longer then started giving a little more air gradually.
It is definitely an exercise in patience, but I was so excited when it finally worked.
