Can a hydrangea survive a freeze?
Luckily, hydrangeas can tolerate some cold and are frost resistant due to their origins in Asia. But beware of severe (night) frost. Hydrangeas can survive the frost, but the buds can be damaged.
Do hydrangeas need to be covered during a freeze?
Keep Them Cozy. Whether or not hydrangeas need protection depends on how cold the winter temperatures drop. If the air temperature doesn’t go below 0 degrees (zone 7) there is no need for winter protection. In colder climates, wrap or completely cover marginally hardy hydrangeas.
How do you prune hydrangeas after freezing?
Wait until warmer weather arrives, then prune back to the next healthy bud or set of leaves. Hydrangea that bloom on old wood may still bloom at the bottom of the plant. New-wood bloomers can be pruned as usual to a few inches off the ground and should flower just as they would have without the frost.