Port Orford cedar disease - Knowledgebase Question

Vancouver, WA
Question by tomnger
April 21, 2006
Hedge started turning brown. PUD is removing it. What do I have to do to prepare soil for planting Arbor Vitae? Should I have stumps ground - they are 60 years old. What do I have to do to prepare for planting new Emerald Green Arbor Vitae?


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Answer from NGA
April 21, 2006

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You didn't say what turned your Port Orford cedars brown. If it was not a root rot disease, you should be able to plant in the same location once you've had the stumps removed or at least ground down. The existing root systems from your old trees might be quite extensive so planting in the area might present a challenge, especially if you want to space your new arborvitaes in a particular way - you may run into old roots from your trees in exactly the spot you want to plant. Arborvitaes grow in average, well draining soil so no particular amendments will be necessary at planting time. If your Port Orford cedars had a root disease, you'll need to positively identify the organism before you can safely plant arborvitaes. If your soil contains pathogens from the previous disease, it may contaminate the roots of your new plants. Hope this answers all your questions!

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