Madia chilensis prefers well-draining soil and moderate watering. Allow the top few centimeters of soil to dry out between waterings. Avoid overwatering, as this can lead to root rot.

Water more frequently during hot, dry periods, but reduce watering in cooler months.

Pruning is generally not essential for Madia chilensis, as it maintains a natural, somewhat sprawling habit.

If you wish to maintain a more compact shape or remove spent flower stalks to encourage reblooming, light pruning can be done after flowering. Remove any dead or damaged stems at any time.

Madia chilensis can be propagated by seeds sown in early spring, either indoors or directly outdoors after the last frost. Germination may be erratic and can take several weeks.

It can also be propagated by stem cuttings taken in late spring or early summer and rooted in moist, well-draining medium.

As an annual or short-lived perennial, Madia chilensis is not typically repotted. If grown in a container, it may be replaced annually or allowed to self-seed.

If you are attempting to overwinter a perennial specimen, repot into a slightly larger container with fresh, well-draining potting mix in early spring before active growth begins.