Pots for growing lotus flowers must be bottomless and suitable for raising fish. Generally, the diameter is about 50 cm, and the pot is filled with mixed soil of black mud and organic fertilizer, with a thickness of 10cm. Put the sprouted lotus root nodes in the soil, and then fill them with mud to cover them. Irrigation depth is about 10cm, especially don't add water too deep in advance, otherwise it is not conducive to water temperature rise and seedling growth, and there will be water shortage in the future. Don't pick lotus roots too early after flowering and fruiting, otherwise it is not conducive to the maturity of lotus seeds. Leaves and stems can be pruned after withering. Lotus roots and pots are put together in a temperature environment above -2 for winter, and the temperature should not be too low, otherwise it will freeze. The soil in the flowerpot can be wet, without water and without light in the storage environment. In April-May of the following year, the propagation can be completed by moving from the storage place to the outside, dividing pots, changing soil and adding fertilizer. It should be noted that it is best not to plant only one pot of lotus, but at least four pots, which is beneficial to pollination and maturity.