Although Moraea tulbaghensis is endangered in the wild, its cultivation presents no difficulty. It is suited to cultivation where winter temperatures do not fall below freezing, and where summers are absolutely dry. It is not suited to areas of high humidity. Plant the corms (obtainable only from specialist indigenous bulb nurseries) in autumn at a depth of 3 cm in a freely draining medium such as equal parts coarse river sand and finely sifted, well-rotted compost. A sunny aspect is required and the plants are most successfully cultivated under cover, in containers with a diameter of 30 cm, or in deep bulb frames. In cold climates of the northern hemisphere they are suited to cultivation in the cool greenhouse, and the plants require bright light for as much of the day as possible. Regular, heavy drenching of the growing medium is needed during the winter-growing and spring-flowering periods, but the corms must be kept completely dry throughout the summer-dormant resting phase.

The species is not generally suited to garden cultivation, except where dedicated, undisturbed areas are kept completely dry in summer, such as sunny rock garden pockets, and where mole rats, porcupines and guinea fowl do not roam.

Moraea tulbaghensis is easily raised from fresh seeds (obtainable from the seed department at Kirstenbosch National Botanical Garden). Sow the seeds in late autumn in deep seed trays, pots or directly into deep seed beds, in the same medium recommended for mature corms. Sow the seeds at a depth of 3-4 mm and take care not to sow too thickly, to prevent overcrowding and reduce the likelihood of loss due to damping-off fungi. Keep the seeds constantly moist and they will germinate within four to six weeks. Seedlings can be left undisturbed for two growing seasons before lifting and planting into permanent positions at the beginning of their third winter growing season, during which some may flower for the first time, if well grown. Alternatively, propagate M. tulbaghensis by separating corm offsets that develop at the base of the mother corm by removing and planting them in autumn, just before active growth begins.

The lower leaf surfaces of Moraea tulbaghensis are susceptible to infestation by red spider mites as temperatures rise in late spring and early summer. The corms are subject to mealy bug infestation and to fungal rotting when not kept sufficiently dry during the summer months.