Water regularly, keeping the soil consistently moist but not waterlogged. Allow the top inch of soil to dry out slightly between waterings. Reduce watering in cooler months. Ensure good drainage to prevent root rot.

Pinch back young plants to encourage bushier growth. Deadhead spent flowers regularly to promote continuous blooming and prevent self-seeding.

Light pruning can be done to maintain shape and remove any leggy or overgrown stems.

Easily propagated from seeds sown directly in the garden after the last frost, or started indoors a few weeks prior. Cuttings taken from healthy stems can also be rooted in moist soil or water.

Young plants may need repotting annually into slightly larger containers. Established plants in the ground rarely require repotting. If grown in pots, repot when roots become crowded, typically in spring.