Not sure off hand what caused the decay in root collar, it did progress up into the main stem about four feet. I'll see if I can find out what caused it. I have some older texts by Pirone and Carter. I remember reading a paragraph or two about decay in evergreens. The only other evergreen I can...
Sanitatation pruning helps to keep it in check and removal of individual trees that have past the point of no return also helps.
I have a client that has several mature Austrian Pines on the property they own. These trees are very large and tall compared to the average Austian Pines in our...
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