Answer: Wish I could diagnose the problem, but the symptoms are vague. Dying limbs at the ends of branches can be caused by zinc deficiency, winter injury, broken limbs, root suffocation, drought, crown gall, herbicide injury, wind damage, heart rot and wood rot, highly alkaline soils, or mechanical injury to trunk, scaffold limbs, and roots. To control these disorders, you'll first have to determine just what the cause might be. I'd suggest taking a sample of the branches to your local cooperative extension office for positive diagnosis. Duval County Extension, 1010 N McDuff Avenue, Jacksonville, FL 32254. Helpful folks there can steer you in the right direction.
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