Erica rhopalantha can be planted in a sunny spot in the garden or used as a potplant. In its natural habitat, it grows in well-drained, sandy, acidic soil, amongst other fynbos plants such as Mimetes cucullatus, Leucospermum oleifolium, various low growing restios and species of Leucadendron. The best time to plant is in autumn when the rainy season begins.

Erica rhopalantha has thin branches and cuttings taken from ericas with this form, are easier to root. (In comparison, those ericas with slightly thicker branches are more difficult to root by cuttings). Semi-hardwood tip cuttings, side shoots and heel cuttings are taken in late summer to autumn or in spring. When making the cuttings, all flowers must be removed. Ensure that the secateur used to make the cuttings is clean and that the plant material is kept moist. Use a suitable rooting hormone and strike the cuttings in a plug tray with a 1:1 mix of sifted bark and perlite. The cuttings are placed in a propagation unit with bottom heating of 24ºC; under mist irrigation. Bottom heat is not entirely necessary but it does help to speed up the rooting process. It can take up to 1 or 2 months before roots appear.

Sow seeds in autumn (April to May) into seed trays filled with a Fynbos mix. The Fynbos mix is made up of composted bark and coarse river sand. Seeds germinate well when treated with Fynbos Smoke Plus Seed Primer. Cover the seeds with a thin layer of medium and water with a fine rose, keeping the medium damp, but not wet. Place the trays in a slightly shaded and warm area. Germination will take place in 6 to 8 weeks.