Hermannia scabra is an evergreen, medium to fast growing shrublet. To ensure optimum growth and development the plant requires well prepared and freely draining soil. Add compost to enrich and to improve moisture retention, drainage and aeration. It grows in full sun and semi shade, but will bloom best in full sun. The plant must be well watered in hot and dry weather. Over watering can cause fungal infection and root rot, to combat this spray with fungicide. To keep the plant well maintained and in good condition and to promote new growth and flowering, prune after flowering and again in midwinter before flowering, and add organic fertiliser. It can be planted in containers, in hanging baskets, rockeries, terraces, slopes and retaining walls.

Hermannia scabra can be propagated by cuttings or seeds. Take softwood or hardwood cuttings in spring and early summer. Use rooting hormone to encourage root growth. Plant in a well-drained, well-aerated rooting medium. Place the cuttings in a warm, brightly lit place but not in direct sunlight. Keep the cuttings moist. Cuttings take 3-4 weeks to root.

Sow seeds in late summer to autumn, in well-drained soil, keep warm and moist until germination. Prick out the seedlings when they are large enough to handle.