Good advice, Tom. I planted several rhizomes of Ocelot in a circle, with the growing side out, and every year since I have added soil around the clump and kind of levered up the outside of the clump so the rhizome was back on a level instead of going down the slope. Occasionally I cut out a section with a knife if I see one area is getting too crowded and plant it elsewhere. I think this is a winning method for me.