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0 Wish green leavesQuercus rubra – treatments against anthracnoseNorthern red oak was planted in the fall of 2020. I have not applied any treatment. For two weeks new buds have started to dry and now the leaves are beginning to be affected, from the margin. Thanks.Read Specialist's advice and another 2 answersGreen leaves0 Wish green leavesoak with yellow and brown leavesHello. In the garden, I have a columnar oak- Quercus rubra 'fastigiata' which has a certain disease. Someone told me the pest is called Corythucha. How can I treat this pest? Also, the leaves do not fall in autumn-winter. What... moreRead Specialist's adviceGreen leaves
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