If a seed grown plant makes a caudex, and stem that looks like an elongated tear-drop, or flask, tapering towards the top, will the plants just continue to grow this way, keeping this shape, or will the caudex at some point, start to fatten and get wider.
I want to grow a plant with a large, 2ft tall caudex, and only two or three fat, but short branches towards the top. I want it to look like those wild, giant, Adenium that you see in pictures taken in the African deserts.
If I let a seed-grown plant just continue to grow without cutting it back, will it reach a point where it will just stop getting taller, then get fatter? Do I have to do a radical stem-chop at some point to induce branching at top end?
Adenium obesum is the most commonly grown plant, so let's use this plant as my experiment.
How would you train this plant, so that it would look like a upright watermelon, with branches growing from the top?
Thanks for the suggestions.