Pruning Spirea
For the most part, spirea shrubs don't require a whole lot of pruning. The main reasons for pruning spirea are to remove dead branches, remove crossed branches, force out new plant growth for more flowers and to actually shape the plants. Spirea plants that bloom on old wood should be pruned immediately after flowering. Spirea plants that bloom on new wood can be pruned at practically any time of the year. Renewal pruning may be used on some spring blooming spirea. Renewal pruning involves cutting a small selection of the older branches back to the ground which forces new growth from the base of the spirea plant.
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