On Jan. 14 Parmar took a helicopter flight to a Douglas fir clearcut being carried out down the Mackenzie Forest Service Road ...
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The Best Time Of Year To Prune The Douglas Fir Tree In Your YardThat includes the Douglas fir (Pseudotsuga menziesii ... than half the diameter of the tree's trunk. Pruning branches that are too large enhances the tree's ability to survive, as it should ...
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