It is difficult to amend clay once you already have all of your daylily clumps established. If I would have known when I planted most 20 years ago what and how to amend clay, my soil would be in much better condition. The soil under my pine tree is wonderful and very rich. If I happen to buy a new daylily, I always take a couple of shovels of that nice rich soil and put it in the hole before planting the daylily.
