Cnidium salinum prefers consistently moist soil but can tolerate brief periods of dryness. Water deeply when the top 2-3 cm of soil feels dry to the touch. Avoid waterlogging, which can lead to root rot.

Reduce watering slightly in cooler months or when the plant is dormant.

Prune back spent flower stalks after blooming to encourage a tidier appearance and potentially a second flush of flowers. In late fall or early spring, remove any dead or damaged foliage.

Heavy pruning is usually not necessary unless the plant becomes overgrown or leggy.

Cnidium salinum can be propagated by division of established clumps in early spring before new growth begins. Sow seeds in early spring or fall, either indoors or directly outdoors in a prepared seedbed.

Seed germination may be erratic and can benefit from stratification.

Repotting is typically only necessary if the plant becomes root-bound in its container or if you wish to divide it. Early spring is the ideal time to repot.

Choose a pot that is only slightly larger than the current one, and use a well-draining potting mix. Ensure good drainage holes.