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bonsaiTALK Artisan
Join Date: Feb-2005
Location: Monrovia, MD
Country: USA
Posts: 143
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Coincidentally I was researching yesterday the many pines I've seen lately that are rust colored and quite dead. It seems that Pine Wilt is a possibility. Evidently stressed trees, mostly ones affected by drought, are suceptible to certain beetles that bore into the bark. If I understood the article correctly, a "blue fungus" enters the tree somehow through the beetle-bored holes and spreads, then a specific nematode that feeds on the blue fungus comes into the picture and finishes off the tree.
I dont know if this could be evergreen-in-general, or just a similar symptom.
Also, according to the article this seems to be most prevalent in the midwest US, although here on the east coast there are an unsettling number of dead pines, even mixed in with healthy looking ones.
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