Begonias- has white moldy looking spots on leaves- its only 2 weeks from the store-what is wrong?

I live in Florida - the hanging begonia is on the screen porch- the leaves are all have big round white moldy looking spots on them.

Begonias- has white moldy looking spots on leaves- its only 2 weeks from the store-what is wrong?
It could be a number of diseases. It might be hard water stains. Hard to say without seeing it, but a general purpose fungicide/bactericide like Consan 20 or Daconil will probably work fine if it is a disease. Typically a spray every two weeks is recommended.
Reply:sounds like the plant is diseased. i would take it back to the store and try again.