Water consistently, keeping the soil evenly moist but not waterlogged. Allow the top 2-3 cm of soil to dry out slightly between waterings, especially during warmer months.

Reduce watering in winter to prevent root rot, but do not let the soil become completely dry for extended periods.

Pruning is generally not required for Carum carvifolium beyond removing dead or damaged foliage. If the plant becomes leggy, you can lightly trim it back in late spring or early summer to encourage bushier growth.

Deadheading spent flower stalks can prevent unwanted self-seeding.

Carum carvifolium is best propagated by sowing seeds directly outdoors in early spring, as soon as the soil can be worked, or in autumn. Seeds require light to germinate, so sow them on the surface of the soil.

It can also be propagated by root cuttings in early spring.

Repotting is rarely necessary for Carum carvifolium as it is often grown as an annual or biennial.

If grown in a container and it becomes root-bound, repot in spring into a slightly larger pot with fresh, well-draining potting mix. Ensure the new pot has adequate drainage holes.