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What's killing my Arborvitae
Two years ago, I pulled out a pair of cedar trees at the West entrance
of my building because they were not attractive and they caused problems with Apple Cedar Rust on my nearby fruit trees. I replaced them with two young four foot Emerald Green Arborvitae. The trees looked healthy on the outside, but the inside had some dead branches which I was told was normal for these trees. After the first year, one of the trees died and was replaced with the same type tree. This year, the second of the original trees died. The replacement tree still looks ok. I talked to a arborist who advised me to check for small mites under the branches. I found none. The tree is watered, when necessary. The soil is black dirt to about a foot, turning to heavier clay. I am wondering if I am wasting time and money trying to grow Arborvitae in this spot with half a day direct sun, or is this nursery selling me bad stuff? I have lots of experience planting trees, especially fruit trees, so I don't think they were planted improperly. My Ortho Problem Solver mentions leafminers, or tip moths, but I have not seen any signs of these yet (they emerge in late spring). I wonder if putting the leaves under a microscope now would reveal anything? I am less inclined to think it was leafminers because the die back occurred rather quickly over the entire tree. Any ideas? Sherwin Dubren |
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