Well, the two plants would each push out several leaves and when the leaves got about 8" wide they'd yellow up and die. This went on all late spring/summer. No type of spray would prevent it the problem or protect the foliage. First one plant died. Then in early July the other looked like it had finally caught hold, had healthy foliage on it (about four stalks/leaves) and then it too died.
They were in 15 gallon pots and I tried to not over or under water them. They had about 6 hours of sun a day so they wouldn't cook.
That's it. I'm throwing in the towel. No more rhubarb experiments.
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