@herrwood, I got started with mine by taking some from my moms a couple of years ago. Mine haven't multiplied as much as yours have but in time they will (I hope)....
I love how you have them everyone. It's kind of funny though, the ones I took from my mom were on the medium size at her place and I noticed this year they grew pretty large for me which I loved.I would plant them everywhere at my place but I keep thinking I'm going to be running out of space soon if mine continue to grow. This past year I've gotten interested in the different varieties to see what else I can find to grow in my climate. I know if nothing else makes it, her original one is pretty dependable for me and I can just go back to it.