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Ornamental onion
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Allium sphaerocephalon · Amaryllidaceae

Ornamental onion

⚠️ Not safe for petsPerennial life cycle, returning to sprout annually.30 to 61 cm
Full sunModerate watering, avoiding waterloggingEasyResistant down to -10 degrees Celsius

Description & origin

The ornamental onion is a bulbous plant known for its spherical and colorful flowers. It is an excellent choice for gardens, adding a splash of color during summer.

Size

Medium height with long, narrow leaves.

Foliage

Green, narrow leaves that emerge before the flowers.

Flowering

Blooms in summer with spherical inflorescences.

Detailed care

Light

Prefers full sun but tolerates some partial shade.

Soil

Well-drained soil rich in organic matter.

Watering

Moderate watering, avoiding waterlogging. Allow the soil to dry between waterings.

Temperature

Resistant to mild temperatures, tolerates moderate cold.

Fertilising

Fertilize with a balanced fertilizer in spring.

Repotting

Transplant in autumn or spring when conditions are favorable.

Pruning

Remove wilted flowers to promote healthy growth.

Propagation

Propagates by dividing bulbs after flowering.

Common problems

Root rot

Caused by excess water, resulting in yellowing and wilting leaves.

Aphid infestations

Can affect the plant, causing leaf distortions.

Fungal diseases

May occur in high humidity conditions.

Uses & curiosities

In the garden

  • Ideal for borders and flower beds
  • Attracts pollinators to the garden
  • Can be grown in decorative pots

Other uses

Used in floral arrangements and as an ornamental plant

Did you know…

The flowers attract pollinators such as bees and butterflies. It is a hardy and low-maintenance plant.