| Your information is scattered so I will make some generalities from which you can ask for more specifics to your plants.
The amount of time you have had the plants is important. If they are new plants the stress of moving them to your home can easily cause the issues you are seeing.
Flowers will die oldest first and not all at once, although, on a good older plant they can be all open at once before the oldest starts to die.
Any change in condition, such as moving the plant to another room, more or less light, air conditioning, heating vents, smoke and more, can contribute to the problem.
It would be important for us to know how long the flowers were opened before dying, if it is not a new plant.
Try to narrow down the problem with the variables I listed and we will try to give you more information. I assumed you are indoors and not growing them outside. Let us know if this is is not correct.
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jerry |