Maintaining star anise plants involves several key practices to ensure their health and productivity:

1. Climate and Soil: Star anise thrives in subtropical climates with well-draining, fertile soil. It prefers partial shade to full sun.
2. Watering: Provide regular watering, especially during dry periods, to keep the soil consistently moist but not waterlogged.
3. Fertilization: Apply a balanced fertilizer during the growing season (spring to summer) to promote healthy growth and fruit production.
4. Pruning: Prune to maintain shape and remove dead or damaged branches. Pruning can also improve air circulation and light penetration into the canopy.
5. Pest and Disease Control: Monitor for pests like aphids or scale insects and treat promptly with appropriate methods. Watch for diseases such as powdery mildew and take preventive measures.
6. Harvesting: Harvest star-shaped fruits (technically seed capsules) when they are mature and dry. Store seeds in a cool, dry place away from light to preserve flavor.

By following these maintenance practices, you can help ensure that your star anise plants remain healthy and productive over time.