Answer: Ideally you would transplant in early spring so the roots have some time to become established before the stress of the hot summer weather. It sounds like the wilted plant is suffering from transplant shock and possible root loss, so it would be a good idea to cut it back to compensate. You could cut it back by about half. Make sure the soil stays moist but not sopping wet until they become reestablished. A few inches of organic mulch would also help keep the soil moist.
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