Grow Erica clavisepala in well-drained soil, in a sunny position. It prefers a well-watered site, but it must be well-drained. Grow it in the fynbos garden, gardens on the coast or on the sandy flats, in the rockery, on terraces, or in containers. When growing ericas in containers, it is important to use the correct soil. It should be a well-drained, acidic (pH between 5 and 6.5), sandy loam, containing 50% well rotted compost, with no manure or strong fertiliser (use slow release or low doses).

Propagate by seed or cuttings. Sow in late summer to autumn (March-May), in well-drained sandy soil. Keep warm and moist. Treatment with Instant Smoke Plus Seed Primer will enhance germination. Use a well-drained, acidic medium. Because the seed is so fine it needs only a light covering of clean sand, or the seeds can be mixed with dry sand and the layer of seed and sand spread in a thin layer on top of the sowing medium. Water with a fine rose to avoid displacing the seeds. Keep the trays damp but not wet and out of direct sun in a warm, but not hot, situation. Germination takes 1 to 2 months. Transplant the seedlings when they are about 10 mm high. Grow on in light shade until they are established.

Take semi-hardwood heel cuttings in late summer, autumn or spring. Treat with a rooting hormone suitable for semi-hardwood cuttings. Place in well-aerated medium, under mist on heated benches ( 24°C). Pot the rooted cuttings in a well-drained, acidic soil medium and harden off in light shade for a month or two.