Answer: What you describe doesn't sound at all good! The chalky white coating could well be a fungal disease called powdery mildew; the drying out and shriveling up are symptoms of an advanced case of powdery mildew. Unfortunately there is no treatment for the disease. If possible, take the plant to your local Master Gardener Clinic or Cooperative Extension office for positive diagnosis of the problem. Best wishes with your Kalanchoe!
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