Yellow/Brown Crowns on your Pine Trees around Long Lake?
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The DNR Park Rapids Area Forestry was his first point of contact when he noticed reddish brown discoloration of the needles and a large amount of pine pitch on the bark of some trees. A DNR consultant forester did further analysis with the landowner. Then a tree service was engaged to remove the trees and safely dispose of them according to DNR guidelines, so as to not infect other pine trees:
http://www.dnr.state.mn.us/treecare/forest_health/barkbeetles
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Pine Bark Beetle |
For an historical study of pine bark beetles, including examples of the devastation caused in Colorado, visit: Bark Beetle Blues
Should the weather pattern of drought conditions like the summers of 2012 and 2013 begin again, the DNR Forestry suggests using a soaker hose in the drip area of these trees, so that one inch of water would be received on a weekly basis by the tree. Watering helps keep the trees healthy, less stressed and better able to resist the pine bark beetle. [MN DNR Pine Bark Beetles Brochure.pdf.] Fortunately, there has been adequate rainfall so far this summer.
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