New wood hydrangeas can be cut in late fall to early spring; old wood types should only be cut right after blooming. Trimming old wood hydrangeas too late removes next year’s buds, so timing is key to ...

Plus, the ideal time of year to cut them back. Hold off on pruning your hydrangeas in the fall—trimming too early can either stunt new wood growers or wipe out next year’s blooms on old-growth ...