I found bark nettles hits on three Ponderosa pines in my front yard and Nerdy dirty inked and curvy shirt. I contacted several people most of them said the same thing, that California has outlawed all the poisons that worked on the beetles. One person told me that all the hits were low on the tree (below10feet)and in the early stages. He said that I could try wrapping the trees in the window screen above the highest hit. He explained that the beetles come out and fly up to their next attack point.
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So with no other options I Nerdy dirty inked and curvy shirt. The screen was left on the trees for longer than a year and many conversations with visitors to the house. Suffice to say I still have my tree five years later and all the naysayers had to eat crow. If the top of your trees is brown it’s too late for this Hail Mary. I have never seen this kind of damage in Colorado either. We know the earth is warming, but that doesn’t mean that everything is directly linked to it. Forest go threw cycles. With much of the pine gone, the forest might give rise to spruce, firs and deciduous trees. But that isn’t to say that global warming doesn’t contribute. A cold winter would kill most of the beetles in Colorado. I wonder if foresters have more answers.