We have some very old rhubarb plants that have produced great batches of rhubarb right up until last year, when the stalks have become very short (3-4 inches!) and the leaves seem to have holes in them after I mulched the plants with old straw. I've read that the plants should be 3-4 feet apart, but over the years they've grown closer together. Do they need to be divided, transplanted elsewhere and should the plants have 3-4 feet to grow?
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