Water thoroughly when the top 5-7 cm of soil is dry. Wigandia urens prefers consistently moist soil but can tolerate short periods of drought once established. Avoid waterlogging, which can lead to root rot.

Reduce watering in winter when the plant is less active.

Prune in late winter or early spring before new growth begins. Remove any dead, damaged, or crossing branches. You can also prune to shape the plant and control its size.

Heavy pruning can encourage a bushier habit and more abundant flowering.

Propagate by seeds sown in spring or summer, or by semi-hardwood cuttings taken in summer. Seeds germinate best with bottom heat.

Cuttings should be treated with rooting hormone and kept in a warm, humid environment until they establish.

Repot young plants annually in spring, moving them to a pot one size larger. Mature plants can be repotted every 2-3 years or when root-bound. Use a well-draining potting mix.

Ensure the new pot has adequate drainage holes.