Small nettle prefers consistently moist soil. Water regularly, especially during dry periods, to maintain a damp environment. Avoid letting the soil completely dry out.

In containers, check moisture levels more frequently as they tend to dry faster than garden beds.

Pruning is generally not required for Urtica urens, as it is an annual plant. If it becomes too leggy or spreads aggressively, you can trim it back. Cutting it also encourages more bushy growth.

Deadhead spent flower stalks to prevent unwanted self-seeding if containment is desired.

Urtica urens self-seeds readily. To propagate, simply allow plants to go to seed and the seeds will germinate the following season.

You can also collect seeds in late summer or autumn and sow them directly in pots or garden beds in early spring or autumn.

Repotting is typically not necessary as Urtica urens is an annual plant that completes its life cycle within a single growing season. If grown in a container and the plant outgrows its pot, you can transplant it to a larger container or directly into the garden in spring.