Keep the soil consistently moist but not waterlogged. Water regularly during dry periods, especially when young. Avoid letting the soil completely dry out, as this can stress the plant.

Reduce watering slightly in cooler months, but still ensure adequate moisture.

Prune in early spring to remove any dead or damaged stems from the previous season. Deadheading spent flowers can encourage further blooming and prevent self-seeding if desired.

For a tidier appearance or to control size, trim back leggy growth after flowering.

Easily propagated from seeds sown in spring or autumn. It can also be propagated by stem cuttings taken in late spring or summer.

Division of established clumps is another effective method, best performed in spring as new growth appears.

Repotting is rarely necessary for Persicaria maculosa as it is often grown as a groundcover or in larger garden settings. If grown in a container and it becomes root-bound, repot in spring to a slightly larger container using well-draining potting mix.