The Q&A Archives: washington navel orange tree dying

Question: I purchased a washington navel orange tree 3 months ago and planted it in my backyard. It was doing fine. It had 2 small oranges on it when I got it and whitin a month it was covered with blossoms, then 2 weeks ago some of the leaves started to turn a little milky white and curl up. Now all the blossoms have fallen of and one of the little oranges as well. The curling of the leaves is starting to spread throught the tree. please help.

Answer: Some transplant shock is to be expected with a new tree, so a few dropping or yellowing leaves would not be unusual. However, leaves that are turning white indicate either a severe soil pH problem, or a fungal disease called powdery mildew. Citrus are not usually affected by this fungal disease, especially if they are planted in full sunshine and have good air circulation all around. Just to be sure this is what you're dealing with, take a few of the affected leaves off your tree, place them in a plastic baggie and take them to your local nursery or cooperative extension office for a positive identification of the problem. Helpful folks there can suggest control remedies.

Best wishes with your orange tree!

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