Allium sphaerocephalon - organic flower bulb

Allium sphaerocephalon – Drumstick Allium

Allium sphaerocephalon, also known as the drumstick allium, adds a playful and elegant accent to any garden. This ornamental onion is valued for its slender upright stems topped with compact, egg-shaped flower heads. The flowers start green and gradually turn to deep purple-red, creating a striking two-tone effect that lasts for weeks.

🌿 Characteristics

• Height: approx. 60–80 cm

• Flowering period: June – July

• Flower colour: green to purple-red, egg-shaped head

• Position: sunny, well-drained soil

• Use: borders, prairie gardens, among perennials and ornamental grasses

🌸 Why choose Allium sphaerocephalon?

• Long-lasting colour: the transition from green to purple provides extended ornamental value.

• Strong and low-maintenance: returns year after year once planted.

• Pollinator-friendly: highly attractive to bees and bumblebees.

• Perfect combinations: beautiful with ornamental grasses, perennials like salvia, catmint and echinacea, or mixed with other alliums.

🌱 Planting advice

Plant the bulbs in autumn (September – November) at a depth of about three times the bulb size. Allow 20–25 bulbs per m² for a dense effect. Allium sphaerocephalon thrives in sunny, well-drained soil and works perfectly with other perennials that provide structure later in the season.