Herbertia darwinii prefers consistently moist soil during its active growing season but should be allowed to dry slightly between waterings. Reduce watering significantly during its dormant period to prevent root rot.

Ensure good drainage to avoid waterlogged conditions.

Pruning is generally minimal for Herbertia darwinii. Remove any dead or yellowing foliage as it appears to maintain the plant's aesthetic and prevent disease.

Deadheading spent flowers can encourage further blooming, though it is not strictly necessary.

Propagation is best achieved through division of the corms during their dormant period. Carefully separate offsets from the parent corm and replant them in well-draining soil.

Alternatively, seeds can be sown in spring, but flowering may take several years.

Repot Herbertia darwinii every 2-3 years, or when the corms become crowded. The ideal time for repotting is after flowering, during the dormant season.

Use a well-draining potting mix, such as a blend of potting soil, sand, and perlite.