What is causing these trees to die?

Asked October 28, 2019, 3:27 PM EDT

Hello, During the summer,a three-story evergreen in my HOA common-area starting showing brown needles. Clearly something was amiss. Three months later, it's all brown and sad looking. (White sap first showed at the trunk in August.) Appears something was also burring into the tree? Now nearby trees are being cut down for some reason. I've attached some photos. Hope you can help me figure out why the trees are dying.

Frederick County Maryland dieback pine tree

1 Response

We cannot say why the trees are declining. Your photos are out of focus and we cannot identify the tree in the right photo. It looks dead.

Once a tree dies it is difficult to determine why. Also, you may be a root issue due to too much moisture, past drought conditions, poor site conditions, compacted soils, poor drainage, possible insects, disease, etc. Many woody ornamentals have been affected by the abnormal rainfall last year. If soils are saturated, there is no oxygen in the soil which affects the root system of the tree and can lead to branch dieback and decline. We also had a drought and this affects the root system too.
Here is more information on these types of problems https://extension.umd.edu/sites/extension.umd.edu/files/_docs/programs/hgic/HGIC_Pubs/TreesandShrubs...

You also can contact a certified arborist for a site visit regarding the health of the trees and the best way to proceed. http://www.treesaregood.org/

Marian