Water Valeriana calcitrapae moderately when the top inch of soil feels dry. Avoid waterlogging, as this can lead to root rot. Ensure good drainage, especially in containers.

Reduce watering slightly during winter dormancy to prevent over-saturation.

Prune after flowering to maintain a tidy appearance and prevent self-seeding if desired. Remove spent flower stalks by cutting them back to the base of the plant. Light trimming can also encourage bushier growth.

Avoid heavy pruning, as it can stress the plant.

Propagate Valeriana calcitrapae from seed sown in autumn or early spring. Alternatively, division of established clumps in early spring is an effective method.

Seeds may require a period of cold stratification for germination. Transplant young plants carefully.

Repot container-grown Valeriana calcitrapae every 2-3 years, or when root-bound. Spring is the ideal time for repotting. Use a well-draining potting mix.

Gently loosen the roots before placing the plant in a slightly larger pot with fresh soil. Water thoroughly after repotting.