I have a baobab that for many years has not agreed to look like a bonsai. It is too tall, maybe 1.5 meter but there aren't any lower branches, except for two about 20 cm height.

I decided earlier a good plan is air layer, getting a nice thick trunk for one tree and getting decent branches for the other. Plan was to air layer in about a week, when I get back from vacation.

How damp would I want to keep the sphagnum moss? If I keep it constantly damp to moist, does that cause root rot? OTOH, letting it dry out seems like it would kill roots just forming.

Are there other special considerations for baobab?