Sow the seed of Agathosma collina in autumn on a medium consisting of equal parts sand and compost in a seed tray. River sand will also suffice as a medium. Cover seeds with a thin layer of bark and then water. Now the seed trays should be placed in a covered area with plenty good light and ventilation. Ensure trays do not dry out or get overwatered. Germination will take place within one to two months. Seedlings are ready for pricking out when four true leaves have developed. Take care not to damage the fine roots. Harden off the seedlings by placing them in shade for 3-4 weeks before placing them in the sun. It is ideal to pinch out the growing tips of seedlings as this will encourage a bushy growth. Buchus can be regularly fed with balanced nutrient products such as Kelpak and later Seagrow. After 8 to 9 months plants should be ready for transplanting in the garden.

Vegetative propagation is done by heel, tip or semi-hardwood cuttings. Fresh cuttings should be taken from the current year's growth. Prepare cuttings by making a clean cut below the node and remove a half to a third of the foliage. The base of the cuttings is dipped in a rooting hormone and then placed in trays filled with a medium consisting of one half bark and one half polystyrene. Place cuttings in a mist-unit with heated benches which will speed up the rooting. Rooting occurs in 9-11 weeks. Rooted cuttings are moved to harden off for 2-3 weeks.

The rooted cuttings are potted in a well-drained mix and than moved to a shady area for 2-4 weeks where they can harden off. After this period, they can be moved to full sun. These young plants will be ready for planting in the next 7- 8 months.

Agathosma collina will do well in gardens with full sun and well-drained soil where it is planted amongst other fynbos species. The best time for planting is between autumn and winter. The rainy season allows buchus to establish themselves in the garden and to cope with drought and less water during summer. Once established, they will withstand a fair amount of frost. Before any planting commences though, it is advisable that the garden bed is prepared by digging over the soil, adding well-rotted compost and a slow-release fertilizer. Companion plants can include: Leucospermum patersonii, L. truncatum, Protea obtusifolia, Leucadendron meridianum, L. muirii, Ficinia truncata, Chondropetalum microcarpum, Thamnochortus fraternus, T. pellucidus, Ischyrolepis eleocharis, Helichrysum dasyanthum, Pelargonium betulinum, Salvia africana-lutea, Erica spectabilis, E. regia subsp. mariae, Delosperma litorale, Lampranthus amabilis, Jordaaniella dubia, Lobelia valida, Satyrium carneum and Haemanthus sanguineus. Suitable buchu species include: Agathosma riversdalensis, A. dielsiana, A. serpyllacea, Acmadenia obtusata, A. mundiana, Adenandra gummifera, Diosma guthriei, D. haelkraalensis and Euchaetis meridionalis. Plant at 20-30 cm intervals, which should provide enough space to encourage growth.

Buchus prefer a rather dense planting as this helps to retain soil moisture. Plants require a good watering in winter and only moderate watering in summer. Plants must never be allowed to dry out completely. Regularly add a layer of mulch to help keep soil and roots cool in summer.

Plants can be maintained in the garden for several years by pruning, once the bush becomes untidy.