Many succulents go dormant once a year. Stapelia is dormant in the winter, while ice-plants are dormant in the summer. Truly tropical succulents may never become dormant if the temperature remains favorable. Most succulents grow readily from seeds, but fungicides must be used to prevent damping-off. The really thrilling methods of propagation are vegetative.
Space here allows reciting only a few commoner types.
Cuttings from highly succulent stems such as cacti or Stapelia should be set aside for two weeks so that the cut surface can callous over before planting. Callousing and rooting in difficult material is enhanced by painting the cut surface with a wet mixture of equal parts of sulphur, rooting hormone powder and powdered fungicide such as Captan. Such cuttings can be given light watering while rooting if they were properly calloused. Some cacti will root in absolutely dry soil. Cuttings of Euphorbiaceae root best under intermittent mist created by misting nozzles controlled by a time clock.