Lapeirousia jacquinii is one of the more easily grown species of Lapeirousia. They are best suited as pot plants to be enjoyed at close quarters. In favourable environments they may spread rapidly and cover the ground. They grow in the winter and flower from late winter into late spring, between late July and mid-October, followed by a dormant period during summer. Unlike most lapeirousias, Lapeirousia jacquinii is self-fertilizing, flowers consistently every year and produces a lot of seeds.

Propagate Lapeirousia jacquinii using seeds or corms. Plant corms or sow seeds in autumn, in a well-drained sandy soil. Cover the bottom of the container with 5 cm fine compost and overtop with an equal amount of coarse river sand or industrial sand. No pre-treatment is needed. Cover sown seeds with a thin layer of soil, about 3 mm deep, and keep moist. Optimal temperatures for germination are between 10°C and 20°C. Germination usually occurs one or two months after sowing. When propagating from corms, plant corms 2 cm deep and keep the soil moist. Lapeirousia jacquinii plants grown from seeds flower in the second or third year of growth, while plants grown from corms should flower in the first year. Flowers usually last three to five days. Store the container with the corms in a dry place during the dormant summer season.

Keep Lapeirousia jacquinii plants in full sun or bright light for as much of the day as possible. They thrive at higher temperatures but can withstand temperatures down to 0°C for short periods. Drench plants thoroughly once a week with water and apply small amounts of universal fertilizer as needed. Young inflorescences of Lapeirousia may be infested with aphids and the corms are eaten by Namaqua rock mice.