Water regularly during the growing season, especially in dry periods, ensuring the soil remains consistently moist but not waterlogged. Reduce watering significantly as the foliage begins to yellow and die back in late spring or early summer, allowing the bulbs to dry out during dormancy.

Deadhead spent flower stalks after blooming to prevent seed formation and direct energy back into the bulb. Remove yellowing or dead foliage in late spring or early summer once it has naturally withered.

No significant pruning is otherwise required.

Common Camash is primarily propagated by dividing overcrowded clumps of bulbs in late summer or early autumn after they have gone dormant. Seeds can also be sown fresh in autumn, but flowering may take several years.

Repotting is typically only necessary when bulbs become overcrowded, usually every 3-5 years. This is best done in late summer or early autumn when the plants are dormant.

Gently lift the bulbs, separate any offsets, and replant them at the same depth.