Answer: A shadier site would be better. Hydrangeas do well in morning sun or in bright dappled light all day long. That would certainly help with the afternoon wilting. You may also find that the wilting is temporary and due to heat stress -- sometimes the plants are well watered but will wilt late in the day, then perk up as the sun goes down. If it recovers without more water and is not wilted by the morning, then it was heat stress rather than lack of water. Pink Elf should be consistently small, so perhaps your plant was somehow mislabeled. I would suggest waiting to move it, this is the most stressful time to transplant. You could transplant in late fall or very early spring.
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