Looking good, some of those in the smaller containers are at about the point where you should transplant them (yeah I have similar problems). Keep on adding soil to your larger containers, I see they're not exactly filled, it works....like you've got a lot of "blank" trunk area there, the plant will grow roots, or huge extra branches like trunks from that, if you cover it, but it probably needs the the extra root space/microbes/nutrients.
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