My indoor gardenia is 7 years old. It has had many blooms over the years but this year for the last 4 months tiny black spots have appeared on the unbloomed blooms causing some to fall off! Someone told me to spray with soapy water. It didn't work, but the leaves were shiny! The leaves are fine just the unbloomed blooms! Please help!
Indoor Gardenia Pests
Certified GKH Gardening Expert
Gardenia plants can be finicky! The spots and bud drop could be from Mites; but it also can be environmental issues or watering problems. I would treat the plant with Neem Oil.
Neem Oil is safe for people and pets.
The links below have more information.