Shasta Daisies Are Not Growing Back In Center Of Plant

Question From: H. Metcalf - CONNECTICUT
Q: Why are my daisies not growing/coming back in the center of the plant? This is the 3rd summer for these plants. I have 5 and had to replace 2 plants this year.
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A: Shasta daisies need dividing to prevent this from happening. Best, Nancy