Answer: The hosta should be able to resprout from the roots, so be patient with it and make sure it receives enough water to keep the soil evenly moist but not sopping wet. As you have seen, hosta leaves do not tolerate frost or a freeze. If this should happen again, cover newly emerging or newly planted hostas with a carboard box, an overturned laundry basket or whatever covering you can improvise. Be sure to remove it promptly in the morning so the sun does not cause the interior to overheat.
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