About 4 years ago, I took the bulbs that were left from a dead lily plant after the Easter season, had gone. I planted it in a large flower pot. The first year it came up but only grew the plant.
But the second year, the plant grew up large and bloomed, with the other shoot growing at the side. Now, I have two plants that produce flowers, each year in May. I noticed that other small shoots are coming through the soil, which means it will give me even more plants in the coming years, as long as it stays healthy.