I transplanted a neglected rhubarb plant earlier this year. The stalks have always been puny (never harvested them per recommendations here). The leaves had looked very healthy, I just returned from a trip to find most of the leaves dying off, and what leaves are left are yellowing on the edges. Most of the puny stalks are now exposed because the leaves have died off. The ground has not been watered, only rain, which I think has been about right. They are next to tomatoes that I sprayed with fungicide. I hate to lose this plant, any ideas? Wondered if I should go buy a bag of manure at Franks and sprinkle on ground. Thanks!