My gardenia bush, which is about 5-6 feet tall, has many yellow leaves. What causes this and how do I 'fix' it? Also, the bush is getting 'leggy'. Can I prune it (but I'm guessing not until after blooming season, maybe during fall-early winter. I assume the flower buds have already been 'set' for this season)?
Care of Gardenia Bush
Certified GKH Gardening Expert
Here is an article that you may find helpful: https://www.gardeningknowhow.com/ornamental/flowers/gardenia/helping-a-gardenia-bush-with-yellow-leaves.htm
As for pruning the gardenia, you may want to hold off on anything too drastic until its normal pruning time in summer. This article will help you with that: https://www.gardeningknowhow.com/ornamental/flowers/gardenia/when-to-prune-a-gardenia.htm