Calochortus splendens is a North American species of mariposa lily known by the common name splendid mariposa lily. Calochortus splendens is native to coastal mountains and valleys of California and Baja California, as far north as Lake County. It is found in various habitats, including chaparral and woodland.
Once the foliage dies back, you can also stop watering until September. Then begin watering again if outside conditions are not sufficiently moist. These bulbs should never be too wet or they will rot, so make certain drainage is sufficient for in-ground plants and pots alike.
Fertilize the plants during the growing season with a weak dilution of bulb food from appearance until April or May. Suspend feeding once the tips of the leaves turn yellow. This signals the bulbs’ dormancy and will herald flowering.
A soil composed of peat moss, loam, or sand, or any soil mixture with good drainage can be used. The soil should not be overly fertile.
Provide good air circulation, with temperatures between 65 (18 °C) to 75 F (23 °C) and nighttime temperatures between 50 t(10°C) to 60 F (15 °C).
