Susun Weeds Wise Woman Forum

I have two potted plants, a lemon balm and a salvia, that have both started developing brown fungus spots on their leaves. I keep both of them on my patio, but not right next to each other. Both are fairly recent transplants--the lemon balm is from a cutting I acquired about two months ago, and the salvia was transplanted from another garden around the same time. Both appear to be flourishing aside from the spots.

What should I do about the fungus? Is there a way to treat it organically/holistically?