Keep the soil consistently moist but not waterlogged during the growing season. Allow the top centimeter of soil to dry out slightly between waterings.

Reduce watering significantly during the dormant period in summer and autumn, especially if grown outdoors.

Deadhead spent flowers regularly to encourage more blooms and prevent self-seeding if unwanted. After flowering, trim back any yellowing or spent foliage. Remove any dead or damaged leaves at any time of year.

Primula sieboldii can be propagated by division of established clumps in early spring or late summer. Seeds can also be sown in autumn or early spring in a cold frame. Germination can be erratic.

Repot young plants annually or as needed, typically in early spring before new growth begins. Mature plants can be repotted every 2-3 years. Use a well-draining, humus-rich potting mix.