Oleanders - Knowledgebase Question

Bullhead City, Ar
Question by kandrasivido
November 18, 2009
Why are some of my oleanders turning brown and dying?

Answer from NGA
November 18, 2009


Root rot from poorly draining soils is the number one cause of oleander death but there is a disease called oleander leaf scorch disease that can kill oleanders. It is a bacteria spread by the smoke tree sharpshooter, a 1/4-inch gray insect common in Arizona. The bacterium penetrates the plant's vascular system, crippling the plant's ability to transport water to its outer branches. There's no treatment for the disease. You may want to take samples of both the dead and the healthy parts of the plant to your local cooperative extension service for a positive diagnosis. Contact University of Arizona Extension Service, 927 Hancock Rd, Bullhead City - (928) 704-4105

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