No Panic! He is NOT sick!
Unfortunately, it happens that small black spots appear on cuttings due to skin abrasions. But this is no reason to panic!Zugegeben sind diese schwarzen Flecken nicht schön. Sie sind aber einfach zu erklären und nicht kritisch.
Diese Flecken entstehen beim Transport der Stecklinge vom Großhändler zu den Händlern. Oft werden 75-100 Stecklinge pro Kiste transportiert, wobei einer am anderen reibt. Dadurch wird die äußere Haut beschädigt und es kommt Sauerstoff an die darunter liegende Hautschicht und diese oxidiert dabei. Dadurch entsteht diese schwarze Färbung.
So there is no reason to panic, unless this area is deeply torn or injured.
Then some cuttings have little tiny "pustules" on the stem. See pictures 2 and 3. Save yourself the chemical pestle. These are normal small openings on the stem that have become woody.
We have photographed these small pustules with a high resolution. You can clearly see that they are not critters.
Now we wish you all much success in rooting your treasures!
Your Plumeria.Shop Team
Black spots on a Plumeria cutting
small brown pustules on a Plumeria cutting
Pustules are not pests
Are the pests, Larvae or Eggs from pests?
On the left we have solved question 2. They are not "critters" that are squatting on the trunk. They are old pores that are dead and woody. It is not advisable to remove them by force, because this will damage the plant there(as if we were scratching away a birthmark) and bacteria could get into the plant.
