I planted a bulb-let of Pancreatum in 10 inch pot. I used, semi-composted leafs and broken bricks (size ½-3/4 inch) only. Fertilised it 8-4-6 NPK diluted to 400 PPM N monthly. On dormancy I opened it yesterday and found a mass of roots at the base and a well-developed bulb. Result: a good media for bulbs those become dormant.