What are the propagation methods for Cuilan flowers?

There are mainly 2 propagation methods for Cuilan: seed propagation and cutting propagation. Horticultural varieties of Cuilan are usually not cultivated by sowing, because although plants propagated from seed have traits similar to the wild species, they may show different variations, thereby losing the excellent characteristics of the horticultural variety; cutting propagation is the main method for maintaining the quality of horticultural varieties. For cuttings, perennial stems or tender branches can be used and inserted into a cutting bed with coarse sand as the medium.