Sow the seed in autumn in a light, well-draining medium such as coarse river sand or equal parts of sand and compost. Cover seeds with a thin layer of either bark or sand, and then water. Place the seed tray in a covered area that provides enough good light and ventilation. The medium must never be allowed to dry out completely or be overwatered. Germination can take between 4 and 9 weeks, and the appearance of the first 4 true leaves indicate that the seedlings are ready for pricking out. The fine roots are extremely fragile and must be handled with care. Place the potted seedlings in a shady area for 3–4 weeks to harden them off, before placing them in full sun. This will also be a good time to pinch out the growing tips of the seedlings to encourage a more bushy growth habit. Regularly feed the young seedlings with some balanced nutrient products.

This species can also be propagated by vegetative means, by taking cuttings. Prepare cuttings of between 25 and 55 mm, taken from fresh material of the current year’s growth; remove about a third of the foliage and cut them below the node. Dip the cuttings in a rooting hormone and place in trays with a medium consisting of coarse river sand or equal parts of bark and polystyrene. Place the cuttings in a mist-unit with heated benches. Pot the rooted cuttings into a well-drained mix and then move them to a shady area for 2–4 weeks, to harden off. After this, plants can be moved into full sun. After 7–8 months plants can be planted in the garden.

Agathosma ciliaris will thrive in full sun and well-drained, sandy soil, and is best planted amongst other fynbos species. The ideal time for planting is in the rainy season between autumn and winter. This allows plants to have a better chance of establishing themselves in the garden before they have to cope with the harsh, dry conditions in summer. Planting-intervals of 200–300 mm, usually provide ample space to encourage growth. This relatively dense planting is preferred by buchus, since it assists with retaining soil moisture. Provide a good thorough watering in autumn and winter. In summer irrigation should just be moderate; however, plants must never be allowed to dry out completely. Mulching also helps in keeping the roots and soil cool during summer.

Plant this buchu with other fynbos plants such as: Lampranthus amoenus and L. aureus, Leucospermum muirii, Felicia filifolia and F. aethiopica, Coleonema album and Pelargonium cucculatum, P. capitatum and P. betulinum.