All, I have significant spotting on a mature Connecticut Broadleaf plant (lower leaves), as well as more minor spotting on two lower leaves of a Pennsylvania Long Red plant... None of my other 30 or so plants of the same varieties are showing these symptoms... Initially I thought perhaps Manganese deficiency, but that would affect many plants, not just two... Thoughts? Please see attached photos - the first three are of the Connecticut, and the last two are of the Long Red. Thanks!