Answer: Your plant is exhibiting classic symptoms of maple leaf scorch, a cultural problem. It shows up most often when we experience hot, dry summer weather. Usually what happens is that the leaf tissues cannot keep up the the rate of evaporation when the air temperature is high. To conserve moisture, the leaf margins are sacrificed so the remainder of the leaves can continue the process of photosynthesis. The new growth next year should be symptom-free. If the leaves show these symptoms during a normal summer, it indicates a salt build up (from overfertilizing). To complicate matters, you may have been overwatering; plan to supply only about one-inch of water per week to your tree. Additional stress may have come from transplanting, and the adjustment to your tree's new home. Give your tree an opportunity to become established and it should be just fine. To help your maple maintain health during the winter months, make sure it gets adequate water if there's not enough natural rainfall, and be sure to rake up and remove any fallen leaves at the end of the season.
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