Water sparingly during the active growing season (spring and early summer), allowing the soil to dry out between waterings. Reduce watering significantly as the foliage begins to yellow and die back in late summer.

Ensure excellent drainage to prevent bulb rot, especially during dormancy.

Remove spent flower stalks after blooming to prevent seed formation, which can deplete the plant's energy. Once the foliage naturally yellows and dies back in late summer, it can be tidied up or removed.

No other significant pruning is usually necessary.

Propagation is primarily achieved through bulb offsets. Carefully divide the offsets from the parent bulb during dormancy (late summer or fall) and replant them in well-draining soil.

Seeds can be sown in fall, but germination can be slow and erratic, requiring stratification.

Repot mariposa lilies every 2-3 years, ideally in late summer or early fall, just before active growth resumes. Use a well-draining potting mix, such as a cactus or succulent blend with added perlite.

Ensure the bulbs are planted at a depth where the top is just below the soil surface.