This is happened to my Orchid flowers. Just want to know the reason and treatments for that....thanx..!
When an Orchid prematurely drops it's buds it's called bud blast. This is likely some stress to the Orchid.
It can be changes in temperatures; either cold or heat. Changes in humidity can also cause bud blast.
A draft from a window or door also can stress the plant.
Another thing to remember is to keep your Orchid from bananas, apples and oranges. They emit ethylene gas which will harm the plants buds and flowers.