You know, this is the kind of situation I run into, having moved around more than I'd like, and gardening where I land, doing what I can with what I find, etc.
The soil here is out of balance, that's visually apparent in the plants, or was to me right away. The more intensive methods of repair are often just not practical for me. In this instance, the various locations this "sudden plant death" have arisen are ... various. Until this one, the plants have stayed in the soil for a while. What's next to those spots -- things are healthy, so far. The entire length of that bed is in process of being redone, and so this is just one more item to factor in.
Meaning, I am not at a stage right now where I am able to mount any kind of major effort targeting any one specific problem. Is this problem so serious I should drop other (fairly urgent and ongoing) tasks to attend to it as a priority? Maybe it is! However, my sense at this moment is that if I am observant and work with the organic solutions suggested in that article (and I will get Neem oil soon as I can!) it is not going to be that dire.
