How to Prune Allium altissimum?
No pruning required, other than to remove old flowered stems and foliage
Allium altissimum · Pruning
Allium altissimum · Allium altissimum
Easy to grow in full sun and a fertile well-drained soil. It is best to grow in containers where garden soil is heavy clay and prone to saturation over winter. See allium cultivation
Watering: Regular watering spring growth, reduce irrigation autumn leaf diebackSunlight: Full sunInformation to be completed