Propagating lippia generally involves cuttings or seeds. Key factors include warm temperatures, well-draining soil, and bright, indirect light. For cuttings, ensure high humidity and use rooting hormone for better chances. Seeds may require stratification or light to germinate. Difficulty can vary, but cuttings are generally easier. Step-by-step for cuttings: 1) Cut a healthy, 4-6 inch stem; 2) Remove lower leaves; 3) Dip in rooting hormone; 4) Plant in moist soil; 5) Cover with plastic to retain humidity; 6) Place in bright, indirect light. Monitor and keep consistently moist until roots develop.