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.
The Portland Japanese Garden pictures

The Portland Japanese Garden pictures

Repotting gooseberry

Repotting gooseberry

Color Help!

Color Help!

Spring blooms! Some photos, and a crocus type indentification question

Spring blooms! Some photos, and a crocus type indentification question

One of my favorite times of the year

One of my favorite times of the year

Plant ID Please

Plant ID Please