Re: Rooting plumeria first time.
Please don't hold me to it but I'm almost positive that the roots only emerge from the callus portion of the cutting, which is why it is important to allow this process to be completed. All of the stem that is submerged is subject to rot if the soil was to remain soggy. If you place it 12" in the pot it would be like burying a tree 12" over the original soil line. I have seen this done but not for a plant that doesn't like to remain wet. Remember plumeria are more of a succulent than a ornamental tree. It is related to (in the same family as)the adenium (Desert Rose) which is a succulent.
Michael
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White Horticulture
Rare, Tropical, Unique
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