I am sorry for this delayed reply to your gardening question. The spring rush has brought a deluge of questions and we are working hard to catch up!
Yes you can prune gardenias to shape as long as you are not forcing them into a size less than about 50% of what the plant would otherwise be. Excessive pruning can reduce bloom especially in the pruned sections of the plant.
Thanks for the question. Best wishes for a wonderful gardening season. Please stop in again soon!
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