Water Gomphrena affinis thoroughly when the top 2-3 cm of soil feels dry. Avoid overwatering, as this can lead to root rot. Allow the soil to dry out slightly between waterings, especially during cooler months.

Reduce watering frequency in winter.

Prune Gomphrena affinis lightly after flowering to encourage bushier growth and more blooms. Remove spent flower stalks to prevent self-seeding if desired. Pinch back young plants to promote a more compact shape.

Avoid heavy pruning, especially in late autumn.

Gomphrena affinis can be propagated from seeds sown indoors in early spring, or directly outdoors after the last frost. Germination typically takes 7-14 days at 18-24°C.

Cuttings can also be taken from healthy stems in late spring or early summer.

Repot Gomphrena affinis when it becomes root-bound, typically every 1-2 years. Choose a pot one size larger than the current one with good drainage. Use a well-draining potting mix.

Repot in spring before new growth begins for best results.