Answer: Your Pieris is an evergreen shrub, but even evergreens eventually lose some of their oldest leaves. If the affected leaves are the oldest ones, those lower and towards the center of the plant, it's nothing to worry about. If the affected leaves are new, it may be a sign of transplant stress - which is a temporary thing. Next spring you can prune your pieris down a bit to remove affected leaves and stems. Pruning will encourage healthy new growth. Best wishes with your garden!
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