I started lilies this year too. I planted tubers in dish tubs about 4 inches deep in soil with sand and small rocks on top to keep tubers in place. I started them in water 4 inches above tub top. As they grew I pushed deeper into water they are now at 24 inches of water. I will leave them at that depth or a little deeper for the winter freeze then plan to pull shallow next spring and hopefully start cycle over again. I also placed fertilizer in pot while planting.
