Answer: Both could cause this symptom, as could fertilizer burn, which often happens when a dry, granular fertilizer is placed in the planting hole.
A new transplant will often suffer stresses and exhibit such symptoms until it has had a chance to put down a good, extensive root system to support itself. Try to keep the root ball moist without making it soggy for long periods of time. Gradually wet a larger area to accommodate the growing roots.
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