Water sparingly once established, only when the soil is dry to the touch. Avoid overwatering, as this can lead to root rot. Young plants may require more frequent watering until they are well-rooted.

Reduce watering significantly during winter dormancy.

Pruning is generally not essential for Spreading Hedgeparsley, as it has a natural, sprawling habit. If desired, prune after flowering to maintain shape or to prevent excessive self-seeding.

Remove any dead or damaged stems at any time of year.

Propagate Spreading Hedgeparsley by sowing seeds directly outdoors in autumn or early spring. Seeds benefit from a period of cold stratification.

Alternatively, root cuttings can be taken from young, non-flowering shoots in late spring.

Repotting is not typically necessary for Spreading Hedgeparsley, as it is often grown as an annual or biennial and allowed to self-seed.

If grown in a container, repot in spring if root-bound, using a well-draining potting mix. Ensure the new pot is only slightly larger.