Water regularly during the growing season, allowing the soil to dry slightly between waterings. Reduce watering significantly during dormancy in summer to prevent bulb rot.

Ensure good drainage to avoid waterlogged conditions, which can be detrimental to the bulbs.

Deadhead spent flower stalks to prevent seed formation and maintain a tidy appearance. In late autumn or early winter, after the foliage has yellowed and died back naturally, cut the dead foliage close to the ground.

This prevents disease and encourages healthy new growth.

Propagate primarily by dividing overcrowded clumps in late summer or early autumn, just before active growth resumes. Bulblets can also be separated and replanted.

Seed propagation is possible but slower, requiring stratification and patience for germination.

Repot container-grown Allium subhirsutum every 2-3 years, or when the bulbs have filled the pot. The best time to repot is during their summer dormancy.

Use a well-draining potting mix, ensuring the bulbs are planted at the correct depth.