Ornamental Onion Caeruleum (Azureum)

An ornamental allium with delicate sky-blue spherical flowers rising on thin, upright stems.

It blooms in early summer and adds an airy, fresh note to the garden.

It is suitable for mixed flower beds, dried bouquets and attracts bees and butterflies.

How to grow

Choosing a spot: Choose a sunny spot in the garden with well-drained soil. The allium prefers full sun, but can also tolerate partial shade.

Soil preparation: Loosen the soil to a depth of about 20-30 cm. If the soil is heavy or clayey, add sand or compost to improve drainage.

Planting the bulbs: Plant the bulbs in autumn, about 6-8 weeks before the first expected frosts. Place the bulbs at a depth of about 15 cm and 10-15 cm apart, with the tip up.

Watering: Water well after planting to establish good contact between the bulb and the soil.

Care: No watering is needed in winter, unless there is a prolonged drought. The bulbs will wake up in spring and start to grow. After flowering, let the leaves yellow and wither before cutting them back – this allows the bulb to store energy for the next season.

Feeding: In early spring you can add a balanced fertiliser for bulbous plants to stimulate growth.

Protection: Relatively resistant to pests, but may need protection against snails and slugs.