Plant disease

Plant disease

I notices some problems with the foliage on some of my begonias that I took outside. Some of the leaves are getting pea-sized, whitish, flat spots on the leaves. When the white dissapears, it evidently leaves a brown spot on the leaf. The white area looks slightly fuzzy, is it some kind of fungus? What do I do about it? So far it appears to only spread to them, not other plants.
Weed ID Please

Weed ID Please

My Little Garbage Garden

My Little Garbage Garden

Plant Identification Needed

Plant Identification Needed

New plants

New plants

Coming By Mail

Coming By Mail

From the terrace…

From the terrace…