"Opt for hydrangea varieties that do well in containers, like hydrangea macrophylla or hydrangea paniculata," he says. "These ...

Hydrangeas planted in flower beds can stay there over the winter. “Plant relocation isn't necessary in any zone, as ...

Potted hydrangeas can be kept outdoors year-round in mild climates, but in colder areas, container plants may need to be overwintered in a cool garage or potting shed to protect their roots.

This method is especially important for hydrangeas grown in porous containers, like unglazed terracotta and clay pots, which Jackson says offer a lower level of frost protection for roots.