Hi , I hope it's okay Im new but I want to help. I have looked up the scaling and if this is truley what it is then the picture may help, as well to rid this plant of this is to use a wasp, or Chemical sprays. However if nothing you wll lose your plant as this insect does suck the sap from your plant. This is what I found.
"The shell or scale protects the older insects from insecticides, so spraying is more effective against the newly hatched nymphs. With scales on outdoor plants there is usually one generation a year and in most species the eggs hatch in late June to July."
I hope this all helps, I will stop back in to see how your plant is doing. You are on the right track. If were me I to would change the potting soil and pot and clean around the area the plants are... Good luck. I wish only the best... Lori
