gardenia sick

Question

My recently purchased gardenia leaves turn yellow and fall. A layer of fog form on leaves (may be insects so I treated with Elementals insecticidal soap), flower buds still turn brown and dry before blossom opens. What should I do?

Answer 1

It sounds like your gardenias are developing powdery mildew. This article should help:
https://www.gardeningknowhow.com/plant-problems/disease/powdery-mildew-homemade-and-organic-remedies.htm