A Technical Report from The Bartlett Tree Research Laboratories
This report provides details about various needlecast and needle blight diseases, including hosts, infection periods, symptoms, and treatments.
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- We have several blue spruce trees in our yard and one is dying, dropping green needles, and turning brown. I don't want it to spread to the others. The trees are about 20 to 25 years old and have always been beautiful. If there is a known problem this year, perhaps you could recommend a spray.
- We have three big Blue Spruce trees in our front yard. All of a sudden, the branches have started to turn brown and are very brittle. What is going on?
- A Colorado Blue Spruce is suffering from some type of blight. Can the problem be determined and treated during the winter?