Scales is not a disease, but an insect. Cottony maple scales can be controlled with horticultural soaps and oils, and beneficial insects like Lady bugs.
First, you will need to determine what type of scale insect has infested your Maple, armored or soft. Once you have done that, spray the tree with the appropriate insecticide.
I have multiple maple trees around my house in various states of growth and I have never had anything even cose to that but I can tell you what may happen if they are used to being in shade and you move them into the sund they will sunburn.
It is caused by a scale insect that can be spotted in the spring/ summer on undersides of leaves. Adult females with egg sacs on the rear or crawlers hatching soon after ; later feeding off of branches/trunks. Other types are purplish oyster shell and those with brown round bodies. Insecticidal soaps are available at your local garden center.
Red maple scale disease is when your plant starts to grow scales and in some cases spots. It can be dangerous to the health of the plant. Therefore, use vinegar to treat it.
scale is not a disease but an insect which is pretty easily treated use dysiston around roots ang apply horticulture oil to scale white things on leaf can usedishsoapandwater
