That was a very conservative estimate! There are probably more like 200 fans! And, there is another clump of something next to it that is just as large. I've had nightmares, just thinking about dividing them! They came with the house though. I wouldn't have let the clumps get this big if I had planted them.
Looks like it is good that I didn't divide already. It's in the 20s today, and the ground is frozen.
