Scale on magnolia bush - Ask Extension
magnolia bush, 15-20 years old, noticed bad infestation of scale in mid-September. What is best treatment option?
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Scale on magnolia bush #852391
Asked October 06, 2023, 1:31 PM EDT
magnolia bush, 15-20 years old, noticed bad infestation of scale in mid-September. What is best treatment option?
Ramsey County Minnesota
Expert Response
Hi Duane,
Scale has been a big problrm this year for magnolia trees.
https://extension.psu.edu/magnolia-scale
I would spray (thoroughly) with an horticulture oil to smoother them. You can buy it quite easily.
Sally Granath
St. Louis County MG