Water Arum cylindraceum moderately during the growing season, allowing the soil to dry slightly between waterings. Reduce watering significantly in late summer and autumn as the foliage begins to die back.

Ensure good drainage to prevent root rot, as this plant is sensitive to overly wet conditions.

Pruning is generally not required for Arum cylindraceum unless removing dead or damaged foliage. Trim away any yellowing or dying leaves in late summer or autumn after flowering and fruiting.

This helps maintain a tidy appearance and redirects energy to the tuber.

Propagate Arum cylindraceum by division of tubers in early spring before new growth emerges. Alternatively, sow fresh seeds in autumn, though this method is slower and may result in less predictable flowering.

Ensure seeds are not dried out before sowing.

Repot Arum cylindraceum every 2-3 years, or when the pot becomes crowded. This is best done in early spring before active growth begins.

Use a well-draining potting mix and a pot that allows adequate space for tuber expansion.