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Why are my Evergreens Brown?

A short update post about a some normal evergreen browning that I see around the area.

Each fall I get a lot of phone calls from worried homeowners concerned about their White Pines and other evergreens. They see pines, spruce and douglas-fir getting brown needles and are concerned the trees may be dying. Most of the time it turns out to be normal fall needle drop - my favorite diagnosis, because it’s always nice to tell people “don’t worry, your trees are fine”

Just as non evergreen trees shed their leaves, evergreen trees need to shed their leaves (needles) as well - it’s just not all at once. For most evergreens this tends to be 2-3 year old needles. It is normal for pines to drop their oldest (inner) needles at this time of year. If the browning is internal - meaning not at the tips of the branches - and the brown is uniform throughout the tree, it’s probably just normal fall needle drop.

If you are concerned, have a Certifed Arborist come by and take a look.

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Mom November 04, 2011 at 10:42 PM
There could be another explanation for the brown leaves.! If your lawn is professionally treated, and the lawn care company used "Imprelis" herbicide made by DuPont, that might be the reason that your trees look as if they are dying. the herbicide was used early this spring and was quickly pulled from the market when it was determined that is was killing some trees and plants. If this is the case, call your lawn care person immediately to report your damage. You are eligible to be compensated by DuPont for the removal, disposal and replacement of your damaged trees. But you need to report it first!
Robert Andreucci November 08, 2011 at 11:07 AM
Good Point about herbicide damage - but I am talking about INTERNAL browning - the end needles remaining green. If an entire tree starts to turn brown you should consult a professional.

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