Will cutting back my gardenia bushes hurt the plants?
Certified GKH Gardening Expert
In order to prune without hurting blooming, you should wait until after the plant's blooms have faded, which should be in the summer. Also, do not take more than a third of the plant in one given year. Here is more information: https://www.gardeningknowhow.com/ornamental/flowers/gardenia/when-to-prune-a-gardenia.htm