Sorry but our Q&A system isn't set up to take photos. I suspect you are seeing mealybugs or possibly scale insects. Smash some of the white stuff and see if there is a pinkish red goo inside which indicates mealybugs. You might also want to take a sample to your local County Extension Office to see if they can look it over and identify your plant's problem. They could then suggest the appropriate solution. If it is mealybugs a systemic insecticide may be needed for effective control.
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