Generally speaking, if it propagates by sowing, it will not bloom until the second or third year. After that, it blooms every year.
The life span of raw stone flowers is very long. If well maintained, it can live for many years and bloom every year. After a bloom, it will not die. Although there may be molting, it will not die.
Sowing is its main mode of reproduction. So if you want to reproduce in this way, you need seeds. Through artificial pollination, we can get seeds by ourselves, so we don't have to buy them. One of its flowers can bloom for about six days. On the third day, its pollen will be ripe, and then it can be pollinated artificially. You can buy a special tool for pollination pen, dip in the pollen of one flower, and then smear it on the stigma of another flower.
If two plants don't bloom at the same time, you can collect them in the refrigerator and wait for the second flower to bloom. If pollination is successful, its petals will become very bright, and soon seed pods will form in the flowers. When it matures, take the seed out of it.