bulb corm tuber

Persian Onion

Allium amphlettense

The Story

Plant Bio

Allium aflatunense is a bulbous perennial prized for its large, globe-shaped flower heads composed of many small, star-shaped, purple flowers, held aloft on tall, leafless stems.

The impressive flower globes, up to 4 inches in diameter, appear in late spring and make excellent cut flowers, fresh or dried. The foliage dies back as the plant begins to bloom.

Uses & Benefits:

Adds striking visual interest with spherical flower clusters, perfect for borders and containers.

Serves as a natural pest repellent and culinary herb.

Supports pollinators like bees and butterflies during flowering.

Essentials

At a Glance

Plant Type

Bulb Corm Tuber

Height

30 inches

Width

12 inches

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8

Water

Moderate

Humidity

Average

Lifespan

Perennial

Native To

Central Asia

Toxicity

Toxic to pets if ingested

Bloom period

Late spring – Early summer

In flower about 2 months of the year

Planting

How to Grow

Tuck seeds into well-drained soil in early spring.
Water regularly to keep soil moist but not waterlogged.
Mist cuttings with water weekly to encourage rooting.
Transplant seedlings when they are 4 inches tall after last frost.
Divide mature bulbs in late summer for propagation.
Mulch around plants to retain moisture and suppress weeds.

Pro Tip

Use well-draining sandy soil and avoid overwatering to prevent rot.

Keep It Thriving

Care Guide

Do

Water consistently during dry spells 💧
Apply a balanced fertilizer in early spring 🌱
Remove dead or damaged leaves for healthy growth

Don't

Avoid overwatering to prevent bulb rot ❌
Do not disturb bulbs when in full growth
Refrain from using high-nitrogen fertilizers late in season

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Deadhead
Divide
Fertilize
Harvest
Plant

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Sculptural clumps in perennial bordersBright accent in rock gardensWildflower meadow feature

Companion Plants

Lavender Sedum Echinacea CoreopsisYarrow

Multiply

Propagation Methods

Good to Know

Common Questions

Persian Onion questions

What zones can Persian Onion grow in?

Persian Onion is hardy in USDA Zones 4–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Persian Onion deer resistant?

Yes — Persian Onion is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Persian Onion bloom?

Persian Onion typically blooms in late spring through early summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Persian Onion need full sun?

Persian Onion does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Persian Onion drought tolerant?

Yes — once established (usually after the first full season), Persian Onion handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.