What could be turning the needles on our pine tree brown?Is there a cure?

Answer 1

If the needles are browning just on the inside of the tree, but the needles farthest out on the branches remain green, the tree is going through natural needle drop. Natural needle drop does not harm the health of the tree and is a normal process as two- to four-year old needles are shed. Drought may increase needle drop but this, in itself, does not harm the tree. But in some cases we are seeing all the needles on a branch turn color. On pines, this may be due to pine wilt, a fatal disease that is found primarily on Scots pine. Other diseases may also be the cause of the symptoms you are seeing. Often it is best to take a sample to your local extension office to be diagnosed. This year, however, the cause of many evergreen problems is not disease but stress. The heat and drought of this summer may have stressed some trees to the point that they may lose branches or die.



How can you tell if a stressed tree will survive? First check to see if the branch with the browning needles is alive. Scrape off a small area of the "bark" of the branch with a sharp knife. There should be green tissue immediately under the bark. This green cambium layer is quite thin with the underlying woody tissue being white. If there is no green at all, the branch is dead.



Also check the ends of branches. Dry, brittle twigs are a sure sign that at least that part of the tree is dead. Dead branches should be removed. Major branch removal may destroy the aesthetics of the tree making tree removal the only viable option.



What can you do to reduce stress? Concentrate on good watering. During dry weather (including winter), water the trees to a depth of at least 10 inches, with deeper watering preferred. You can check the depth the water reaches by pushing a long screwdriver, metal rod or wooden dowel into the soil. It will stop when it reaches dry soil. During hot, dry weather, trees may need watered once a week. If we have an open, dry winter, water the trees once per month when the temperatures are above freezing.

Answer 2

Pine Tree Turning Brown

Answer 3

If the needles underside and inside toward the tree trunk turn brown and fall, it's just the tree is going through the season, and you don't need to worry. This happens pretty much every fall. If the needles getting brown from the top of the tree, this tree might be suffering from severe dehydration and need more moisture. If the needles get brown all over the tree, it could be a beetle infestation. Consult a local arborist.

Answer 4

Italian Pine Tree

Answer 5

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Answer 6

At this time of the year it is normal for the oldest needles to turn brown and fall

Answer 7

My Italian pines have a blight caused by a beetle that's eating away at the tree. Sadly we're going to lose all of them. I hope yours is something more benign. Best wishes.

Answer 8

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