Has anyone had success with celeriac? I planted 18 cells with seeds, and only 1 came up. Replanted the rest of the cells, but still no luck. Then I put some seeds between damp paper towels, put it into an open ziplock bag, and today I had a lot that germinated. But man, are they ever tiny! I needed tweezers and good eyesight to pick them up and plant them into cells. How have you fared with growing celeriac?