I read this thread on a fig forum. https://www.ourfigs.com/forum/figs-home/291461-rooting-cuttings-can-we-reduce-the-process-to-its-essence
It caused me to ask the same question about rooting citrus cuttings. From this posting: Question: What are the essential components of an environment that will cause wood to sprout? Under proper conditions, we should need no medium at all, other than air -- a stick of fig wood suspended magically in the air could sprout roots, if other conditions were suitable. If so, then everything non-essential might simply complicate the process and reduce the probability of success. The non-essentials could be eliminated, boosting the probability of success.
The poster in this thread found that fig cuttings will root without being stuck into a growth/rooting medium. Can this be true of citrus? In other words, what are the essential conditions required for rooting citrus cuttings?

Does it make a difference if you use a wide, squat pot or a deep pot of the same diameter?

Anybody know of a good online vendor of jaboticaba plants?

Can someone recommend a soil mix recipe for containers of 15 gal and up for growing citrus? I have tried commercial cactus potting soil but lost a nice calamondin as a result (root rot). I also tried Talpa's gritty mix on a few small trees but I need to re-pot 5 large trees and the gritty mix takes way too much work to prepare. Any suggestions?

I have a 40 year calamondin that has been in the same pot for about 5 years. Leaves look good but it has not put out any new growth in a while. But the root ball is pretty dense. Should I leave it in the same pot and prune the roots? Should I also prune the branches? Or should I just put it into a larger container without pruning it?