What to do about mildew (mold?) on indoor begonia

My beautiful begonia has been sitting above the kitchen sink since late May. I just discovered there are white to grey spots on many of the leaves. How can I treat it and keep it in the house? Or should I just dispose of it? It is still warm enough at night here (Colorado) that I can leave it outside right now, but did hope to keep the plant in the house during the winter.

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1 Comment To "What to do about mildew (mold?) on indoor begonia"

#1 Comment By Downtoearthdigs On 09/23/2016 @ 8:26 pm

You can spray the plant with Neem Oil.
Use it weekly until the problem clears up. Neem Oil is safe for people and pets.

Here is a link with more information.
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm ^[1]

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[1] https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm

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