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are my pine trees dying?

 
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I have several pine trees on my property, white pines i think. one of them went completely brown this summer and looks dead. all the other ones, about 10, have brown patches (in the last couple of weeks) and not just on the inside as many online info says pines loose some needles in the fall. i have posted a picture of the "dead" one and one next to it with patches. any advise would be appreciated. Thanks, Chris.
IMG_20181104_105213.jpg
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pollinator
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Location: Virginia USDA 7a/b
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Losing end needles or not? Those should be bendy and soft if it was a temporary setback.

Otherwise firewood I would guess.
 
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The one on the left looks like it's dead as a door nail.  The one on the right looks to be seasonal fall needle drop (normal).  I think...
 
gardener
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check the trunks, I am afraid you have pine borers, the tree on the left is dead, the one on the right is showing tell tale signs of borers (the way the tip needles are dying back is not indicative of seasonal needle drop).  

Redhawk
 
chris poole
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thanks Redhawk.
Any recommendations for taking care of this problem? insecticides? I have 10 of these trees and they all look exactly the same (patchy yellow needles). would hate to loose them all.
 
pollinator
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Better to get rid of them. If even if they survive this year, there's still the next, or the one after that. They are prone to infestation, which is why they became infested. They are going to die.

In my opinion, such pestilences are nature's way of suggesting to us that we've gone too far one way, and that a healthy system will require a change.

Looks like firewood to me.

-CK
 
Bryant RedHawk
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If you can make a good compost tea and spray the trunks, limbs and ground around the trees, every month for a year, you might have a chance of saving them.

Borers are inside, eating away at the tree's cambium layer and once they go all the way around the trunk, they have girdled the tree and it will die because no nutrients can get up to the limbs.
All that stress, even if they don't manage to girdle the tree below the bark, takes a huge toll on the tree's health.
Whole forests have succumbed to pine borer damage.
 
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