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Yellowing leaves on a tulip poplar tree are often caused by weather. In hot, dry weather, the interior leaves will yellow and fall off. This natural occurrence is not a disease.
T.M. Samuels has been a freelance writer since 1993. She has published works in "Arthritis Today," "Alabama Living" and "Mature Years," and is the author of a gardening book. Samuels studied pre-medicine at Berry College.
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Planting
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