Gardenia Plant Pests?
My gardenia plant has a white, powdery substance around the buds, which are not blooming and subsequently dropping off. Leaves are green and shiny and new leaves are appearing. Some leaves have holes in them. What to do?
Certified GKH Gardening Expert
The plant sounds like it may have a bit of powdery mildew and possibly flea beetles. Here is information both these things:
We recommend treating the plant with neem oil. It is safe for humans and pets and treats both problems your gardenia possibly has. Here is more information: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm