Primary propagation for heynea includes seed sowing and stem cuttings. Key factors involve optimal light, proper temperature, and well-drained soil. Special considerations for heynea involve scarification for seeds and use of rooting hormone for cuttings. Propagation difficulty is moderate. Steps: 1) For seeds, scarify and sow in spring; maintain moist soil. 2) For cuttings, take in late spring, apply rooting hormone, plant in well-drained soil, and keep in indirect light. Both methods require consistent moisture without waterlogging.