So my mint was doing wonderful and growing very fast. However, a few weeks ago I noticed the leaves were yellowing and had black spots. The leaves would eventually turn completely brown and fall off. It started with just the lower leaves but has now spread to the entire plant. At first I thought it was just a lack of sunlight on the lower leaves or too much water because it had been raining a lot. However, I have allowed the soil to dry out and its only gotten worse. I also tried fertilizing thinking perhaps it just needed some nutrients, and I tried spraying with a neem oil solution thinking perhaps it was some sort of fungus. I tried plucking all of the bad looking leaves off and then left it to see if it would come back. But its now getting worse. Oh, its in a container, on my porch, in full sun. Any ideas???
I cant seem to get a picture to post, anyone know how to do that?