Water regularly, especially during prolonged dry spells, but allow the soil to dry out slightly between waterings. Avoid waterlogging, as this can lead to root rot. In containers, ensure good drainage.

Deadhead spent flower stalks to encourage continuous blooming and prevent self-seeding if unwanted. Cut back plants in late autumn or early spring to maintain shape and encourage vigorous new growth.

Verbena bonariensis can be propagated by seed sown in spring or by softwood cuttings taken in late spring or early summer. Seeds may require stratification. Cuttings root easily in moist, well-drained compost.

Container-grown plants may need repotting every 1-2 years. Repot in spring into a slightly larger container with fresh, well-draining potting mix. Ensure the new pot has adequate drainage holes.