Answer: Improper pruning is the most common reason for lack of hydrangea blooms. Hydrangea macrophylla blooms on new shoots which develop on old wood. Therefore, careful pruning is a must. If you cut down all the stems, it won't have any old wood on which to develop flowering stems. The best approach is to prune it back in late fall or early spring (before new growth begins). Cut the old stems down to about 18" above ground level. New shoots will be produced lower down on the stems and they will develop flowers. Best wishes with your hydrangea!
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