Heather
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on August 19, 2012
I don't think it is a sign of anything serious, but it may be a sign that the plant needs to be divided. I would try dividing it. This article will explain how to divide a plant:
https://www.gardeningknowhow.com/garden-how-to/propagation/propgen/dividing-plants.htm
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