What causes Gardenia buds to drop without flowering?
Gardenia was flowering when I bought it; now buds prolifically but buds wilt and drop.
Certified GKH Gardening Expert
These plants do not tolerate change, at all. Their environmental needs are many, and humidity is usually the cause for bud drop. Really, almost any disturbance will stop flowering.
This article will go over how to prevent this, and what causes it.