bulb corm tuber RHS Award

Siberian Squill

Scilla siberica

The Story

Plant Bio

Scilla siberica, commonly known as Siberian squill, is a spring-flowering bulb that produces striking blue flowers.

This species is known for its ability to naturalize and form beautiful carpets of color in wooded areas.

Uses & Benefits:

Adds early spring color with delicate blue flowers; ideal for woodland and rock gardens.

Low-maintenance bulb that naturalizes well, reducing planting effort.

Provides early nectar for pollinators emerging after winter.

Essentials

At a Glance

Plant Type

Bulb Corm Tuber

Height

6 inches

Width

3 inches

Light

Full Sun, Partial Sun, Shade

Zones

4, 5, 6, 7, 8

Water

Moderate

Humidity

Average

Lifespan

Perennial

Native To

Western Asia, Caucasus, southern Russia

Toxicity

Toxic if ingested

Bloom period

Early spring – Mid-spring

In flower about 2 months of the year

Planting

How to Grow

Tuck bulbs 3 inches deep in well-draining soil in fall.
Water thoroughly after planting to settle soil.
Mist bulbs during dormancy if soil dries out in winter.
Thin out overcrowded clumps in early spring for better growth.
Apply a light layer of mulch to protect from extreme cold.
Remove spent flowers to encourage bulb energy storage.

Pro Tip

Plant bulbs in early fall for vibrant spring blooms and ensure good drainage to prevent rot.

Keep It Thriving

Care Guide

Do

Water regularly during active growth 🌱
Apply balanced fertilizer in early spring 🌱
Mulch to retain moisture and regulate soil temperature 🌱
Divide overcrowded clumps every 3-4 years 🌱

Don't

Avoid overwatering in winter ❌
Don’t plant too deep or too shallow ❌
Refrain from disturbing bulbs during flowering ❌
Never let soil become waterlogged ❌

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Plant
Spring Cleanup

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Violet-scented spring borderRock garden accentNatural woodland planting

Companion Plants

CrocusSnowdrops Puschkinia Chionodoxa Fritillaria

Multiply

Propagation Methods

Good to Know

Common Questions

Siberian Squill questions

What zones can Siberian Squill grow in?

Siberian Squill 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 Siberian Squill deer resistant?

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

When does Siberian Squill bloom?

Siberian Squill typically blooms in early spring through mid-spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Siberian Squill need full sun?

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