Aulax can be propagated by seed sowing and semi-hardwood cuttings. Key factors for success include bright, indirect light, well-draining soil, and moderate temperatures. Cuttings should be taken in summer, with special care to maintain high humidity. Propagation can be moderately difficult due to the need for consistent conditions and the potential for cuttings to rot if overwatered. To propagate by cuttings, select healthy stems, cut 4-6 inch lengths, dip in rooting hormone, plant in a well-draining medium, and keep moist but not wet until rooted.