Answer: It is really difficult to diagnose a plant problem without actually seeing it, but the usual cause for browning foliage on hollies is drought, or over-saturated soil. If your soil drains poorly, it can cause root rot, which will show up as browning foliage. I'd suggest taking a sample of the leaves (or an entire branch) to your local Cooperative Extension office or even a well staffed nursery for help in diagnosing the problem. Best wishes with your holly!
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