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Japanese Magnolia strange infestation


Question
I have yellow round spots on the bark.. some leaves of this young tree are getting what I beleive to be sooty mold... It is spreading fast over what was an incredibly healthy tree. I would love to send pictures for proper immediate cure. It is clusters of yellow kinda plastic looking stuff....spreading fast.
my camera battery is charging I will send pics soon.

Answer
Please send the pictures especially of the bark. The sooty mold sounds like a scale problem. Scale insects suck the plant juices form the twigs and secrete a substance called honeydew which is high in sugar content and sticky. A sooty mold will grow on this honeydew. Control the scales and the sooty mold will stop growing and go away. Treat the soil around the tree with an insecticide called Bayer Advanced Tree and Shrub Insect Control. This is a applied to the soil around the tree and the roots will pick it up and carry it to the twigs and foliage and when the scale feeds on the plant juices they are killed, For large tree it may take a week or so for the insecticide to reach the upper parts of the tree. Here is a web link to this product.

http://www.bayeradvanced.com/tree-shrub-care/products/12-month-tree-shrub-insect...

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