How To Look After Hydrangea In Winter. Remove about half of a panicle hydrangeas older stems and their lower suckers. Petiolaris is rated hardy in zones 4 through 7 or 8.
Concurrently remove any weak or dead branches by also cutting them off at the base. Hydrangeas are woody shrubs with bright beautiful heads of flowers. If the temperature falls into the single digits for only a few hours at a time the hydrangea should not be harmed.
Pests are not common on hydrangeas but can appear when plants become stressed.
Hydrangea paniculata sometimes called Hardy Hydrangea also blooms on new wood. If youve got a cylindrical oakleaf-type prune after flowering in mid-summer This is because different varieties form blooms at different times of the year. While they are hardy plants they are very sensitive to loss of moisture. Firstly cutting back the hydrangea for winter is the best thing to do.