Q.new hydrangeas have lost all leaves
Plants still in original pots. They wilted and lost their leaves. I have kept the soil very damp to help. Can they be saved? What can I do to save them?
Sometimes a potted shrub or plant has little soil that can retain moisture.
I would plant them out as quickly as possible, or move them to a larger pot with adequate potting soil.
Here is a link to proper growing conditions Hydrangeas need.
keep soils moist but do NOT drown it, especially after it has been droughted. repot/plant in the ground. acidy of soil/compost may change the flower colour!