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Ornamental Onion
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Allium millenium · Amaryllidaceae

Ornamental Onion

✅ Pet-friendlyPerennial life cycle, sprouting again each year.30 to 61 cm
Full sunModerate watering, especially in dry periodsEasyResistant down to -10 degrees Celsius.

Description & origin

Allium millenium is a perennial plant known for its spherical flowers. Its purple inflorescences attract pollinators and beautify any outdoor space.

Size

Maintains an upright habit, reaching up to 60 cm in height.

Foliage

Leaves are long and narrow, with a vibrant green color.

Flowering

Blooms in summer, producing ball-shaped inflorescences.

Detailed care

Light

Prefers full sun but tolerates partial shade.

Soil

Prefers well-drained, organic-rich soils.

Watering

Requires moderate watering, especially during dry periods.

Temperature

Resistant to mild temperatures, tolerates cold well.

Fertilising

Fertilize in spring with a balanced fertilizer to promote growth.

Repotting

Transplant every 3 to 4 years to avoid excessive rooting.

Pruning

Trim dry leaves after flowering to keep the plant healthy.

Propagation

Can be propagated by bulb division in autumn or spring.

Common problems

Root rot

Can occur in poorly drained soils, causing root decay.

Insect pests

May be susceptible to aphids and mites, affecting foliage.

Fungal diseases

In overly humid conditions, it may develop fungi.

Uses & curiosities

In the garden

  • Ideal for borders and beds
  • Attracts pollinators like bees and butterflies
  • Great for low-maintenance gardens

Other uses

Can be used in floral arrangements due to its beauty.

Did you know…

This plant is drought-resistant and can be grown in various soil types. It is an excellent choice for low-maintenance gardens.