All of my heirlooms and dwarfs have this same disease. It has been useless spraying with Daconil as we have been getting rain literally every day. This is the first summer we have ever had to drain our small swimming pool. This month we have had to drain it three times! It starts out as small dark spots all over the leaves. But not on the lower older leaves. From about half way up to the top. Looks all the world like pictures of septoria leaf spot. Then the yellow starts to spread on the leaves as the spots get bigger. But here's why I don't think it is: my two hybrids, sun gold and super sonic are thriving. And I don't think hybrids have resistance to septoria leaf spot. The heirlooms and dwarfs are so far gone I don't think they can be saved. Plus we'll be gone for a week or two and I won't be able to keep up the fungicide spraying. But I would really like to know what this is and maybe what I can do next year to prevent it. I grow in containers and will definitely be tossing the recycled nursery pots and scrubbing my nice pots I use for the dwarfs. Would appreciate your opinions of what disease this is.