Broad-leaved dock prefers consistently moist soil, especially during establishment and dry periods. Water deeply when the top 2-3 cm of soil feels dry. Avoid waterlogging, as this can lead to root rot.

Reduce watering frequency in cooler weather or when the plant is dormant.

Pruning is primarily for managing size and removing spent flower stalks to prevent unwanted self-seeding. Cut back old foliage in late winter or early spring before new growth emerges.

Remove flower stems as soon as they appear if seed production is to be avoided.

Broad-leaved dock is easily propagated by seed sown in early spring or autumn. It can also be propagated by division of established clumps in spring or autumn.

Be aware of its vigorous self-seeding potential; collect seeds promptly if control is desired.

Repotting is generally not applicable for this perennial herb, as it is typically grown in the ground.

If grown in containers for temporary display or propagation, repot in spring when new growth begins, using a well-draining potting mix. Ensure the container is large enough for root development.