Have been seeing some of this too on live oaks; yours look like laurel oaks?
I don't think it is disease. I've been chalking most of it up to dry, dry, dry conditions and girdling roots. But the trees with the lower branches browning first is puzzling. MaNY OF THE BRANCHES HERE, WHICH HAD BROWNING, ALSO
HAD GREEN BUDS OR CAMBIUM...(HATE THAT CAPS KEY!).....
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University of Florida
Collier Co. Extension (a Public Services Department)
Commercial Landscape Horticulture
14700 Immokalee Rd.
Naples, FL 34120
I have an oak tree problem that has me stumped.
At first glance it looks like a pesticide problem, but the evidence is muddy at best.
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Manatee County Extension
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