Can you attach some images of the tree and the affected leaves.

Thanks



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On May 26, 2021, at 1:34 PM, Ask Extension <<personal data hidden>> wrote:





I suspect the symptoms you are seeing are due to a failure in the root system of this plant to function normally.  This could be the result of oversaturation of the soil in the planting bed, or, the plant may have been put into the ground too deep leading to lack of oxygen.  Presumably, you have been getting abnormally high rainfall over the past several weeks, and if you have also been supplementing with additional water, this would lead to extremely high soil moisture.  I realize there is another plant nearby, but the drainage could very well be different at the two locations.  This plant is in serious danger of completely failing, and the symptoms do not resemble those caused by any Magnolia pathoges other than those that cause root rot.  Phytophthora root rot, for example, might be responsible, but only under conditions of high soil moisture.  If you want to try to save it, I would recommend excavating it from the soil, planting it in a large pot, and seeing if it can be revived under alternate growing conditions.  Let the soil in the pot dry out well between waterings.

Please see the comments from our tree pathologist.

I suspect the symptoms you are seeing are due to a failure in the root system of this plant to function normally. This could be the result of oversaturation of the soil in the planting bed, or, the plant may have been put into the ground too deep leading to lack of oxygen. Presumably, you have been getting abnormally high rainfall over the past several weeks, and if you have also been supplementing with additional water, this would lead to extremely high soil moisture. I realize there is another plant nearby, but the drainage could very well be different at the two locations. This plant is in serious danger of completely failing, and the symptoms do not resemble those caused by any Magnolia pathogens other than those that cause root rot. Phytophthora root rot, for example, might be responsible, but only under conditions of high soil moisture. If you want to try to save it, I would recommend excavating it from the soil, planting it in a large pot, and seeing if it can be revived under alternate growing conditions. Let the soil in the pot dry out well between watering.

Thanks