Water deeply but infrequently, allowing the soil to dry out between waterings. Wavyleaf paintbrush prefers well-draining soil and can suffer from root rot if overwatered, especially during dry dormancy periods.

Prune after flowering to remove spent flower stalks and tidy up the plant. Cut back any dead or damaged foliage in late winter or early spring before new growth emerges to encourage a neat appearance.

Propagation is typically done from seed, sown in fall or early spring. Scarification or stratification may improve germination rates. Cuttings are generally more difficult and less successful.

Repotting is rarely necessary for wavyleaf paintbrush as it prefers to be undisturbed. If transplanting from a pot, do so with extreme care to avoid disturbing the root system.