These just naturally fall off and germinate. You can plant them also, but not too deep. The color of the flesh is a good indication of the flower color. This process takes many many years. I plant them all for the future. Some care as to where you plant them is needed because they can easily be overlooked and weeded out. Division of the parent bulb clump is quicker but I have found that they don't bloom for some time after being disrupted.
