Agapanthus coddii prefers consistently moist soil during its growing season, especially when flowering. Water thoroughly when the top 2-3 cm of soil feels dry.

Reduce watering significantly in winter, allowing the soil to dry out more between waterings to prevent root rot. Ensure good drainage.

After flowering, remove spent flower stalks at their base to tidy the plant and prevent seed formation, which can drain energy.

Cut back any yellowed or dead foliage in late winter or early spring before new growth appears. Avoid heavy pruning; focus on maintenance and removing spent parts.

Agapanthus coddii is best propagated by dividing established clumps in early spring or autumn. Carefully separate the rhizomes, ensuring each division has at least one bud. Replant immediately into well-draining soil.

Seeds can be sown but are slow to germinate and may not produce true-to-type plants.

Repot Agapanthus coddii every 3-4 years, or when the plant becomes pot-bound and its roots fill the container. This is best done in early spring before new growth begins.

Use a slightly larger pot with fresh, well-draining potting mix. Division can often be done during repotting.