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Must learn to prune hydrangeas
How And When To Prune A Gardenia Shrub When To Prune A Gardenia It is best to prune your gardenia shrub right after the blooms have faded in the summer. Gardenias will set their flower buds for the next year in the fall. So pruning in the summer will allow you to cut back some of the older wood without risking cutting away newly set buds.