Open-field cultivation of ornamental Allium

For ornamental Allium, the absence of waterlogging is critical; therefore, in open-field conditions, it is necessary to provide a drainage layer and select sites with good permeability. The plant prefers light soils that require the addition of sand or gravel and does not tolerate high humus content or heavy clay well.

Bulbs are planted in autumn at a depth equal to 2–4 times the height of the bulb. When selecting a site, the light regime should be considered: a lack of sun leads to deformation and lodging of the flower stalks, and tall varieties require protection from the wind. Due to the rapid die-back of foliage after flowering, it is recommended to plant ornamental Allium next to perennials capable of masking the fading above-ground part.

The crop is drought-tolerant and does not require frequent watering, which can be detrimental during the dormant period. Excessive fertilization is undesirable, as it harms the condition of the plants. The specific odor of the bulbs provides natural protection for the plantings against certain types of pests and rodents.