Water regularly during the growing season, ensuring the soil remains consistently moist but not waterlogged. Reduce watering significantly once the foliage begins to yellow and die back in late spring or early summer.

Allow the soil to dry out during dormancy.

Remove spent flower stalks after blooming to prevent seed production and direct energy back into the bulb. Cut back yellowing or dying foliage to the ground once it has naturally withered.

This helps maintain a tidy appearance and prevents disease.

Camassia cusickii can be propagated by division of offsets in late summer or early autumn when the plant is dormant. Sow fresh seeds outdoors in autumn in a cold frame or unheated greenhouse.

Germination may be slow and erratic.

Repotting is generally not required frequently, as Camassia prefers to be left undisturbed.

If necessary, repot in late summer or early autumn, typically every 3-5 years, when the bulbs have finished their dormant period. This is also a good time to divide any overcrowded clumps.