White material on magnolia - Ask Extension
A magnolia has white material on the branches. The top is fluffy and can be brushed off. There are light brown lumps underneath. I would like to know ...
Knowledgebase
White material on magnolia #875324
Asked June 30, 2024, 10:23 AM EDT
A magnolia has white material on the branches. The top is fluffy and can be brushed off. There are light brown lumps underneath. I would like to know what it is and how to treat it. Thank you.
Franklin County Ohio
Expert Response
https://ohioline.osu.edu/factsheet/ENT-61
The white patches are insects known as Magnolia Scale. They are sucking insects and are drawing nourishment from the sap in the stems of your plant. The above website provides some information on this insect and how to control it. At this time of year , it is best to apply a soil drench of a systemic insecticide, such as, imidacloprid. This can be found in insecticides containing "Merit", such as Bayer Tree and Shrub insecticide.
The white patches are insects known as Magnolia Scale. They are sucking insects and are drawing nourishment from the sap in the stems of your plant. The above website provides some information on this insect and how to control it. At this time of year , it is best to apply a soil drench of a systemic insecticide, such as, imidacloprid. This can be found in insecticides containing "Merit", such as Bayer Tree and Shrub insecticide.
Thank you.
You are welcome.
