Jennifer,
With your tree that you are showing. I feel that the first thing I need to mention is in regards to Caudex (girth of base). If a tree was left in the ground over the years the girth of the tree would become larger and circumference would become greater. This is true with Adeniums also.
It is called the caudex. What Adenium growers do is "raise" the tree when repotting it. Exposing the "root" (at least what was beneath the soil) now this newly exposed portion called part of it's "Caudex".
Your tree could wider underneath the soil line.
Not sure how long it has been since you repotted it?
These Adeniums all are genetically programmed to grow the way they are meant to. No different than ones children.
People do manipulate by cutting off roots, pruning hard, feeding in hopes of all making the "caudex" larger.
As for your seedlings. I cannot tell you what they will do.
On the point of dormancy and growth. If your tree is actively pushing out new leaves, then it is not dormant. If it is not producing new growth and still has leaves, it is not actively growing.
Dormant trees do not have to shed leaves, especially the obesum's.
I would give your tree, when it is time. A good pruning to make into a more compact shape and raise it up, but not in any larger of a pot than what it is in now.
I do not mean to be condescending, Jennifer. Just wanted to point out a few things.
Rick
