should not be pruned in fall, as they bloom on last year’s growth," she says. "Pruning them now will only reduce next year’s ...
In spring, give potted plants a jump start on the growing season by moving them to a sunny room with night temperatures ...
To avoid these issues, never prune hydrangeas in fall or early winter, prune new wood hydrangeas in early spring, and only prune old wood hydrangeas immediately after they finish flowering.