Answer: It's really difficult to diagnose a plant problem without seeing it. Hollies tend to lose their oldest leaves at this time of year. If the yellowing leaves are lower down on the plant and on the inner parts of the branches, it could be a natural shedding of old leaves. If the yellowing is also on the newer foliage, you'll want to check the soil drainage, and be sure that you're watering adequately. You might also want to take some of the affected leaves to your local nursery so they can inspect them. Best wishes with your hollies!
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