How to Grow Scilla
Wikimedia Commons
Scilla
Scilla siberica
flowerScilla, commonly known as Siberian squill, is a small spring-flowering bulb prized for its delicate, bell-shaped blue flowers that bloom in early spring. This low-growing perennial is native to Russia and Siberia and naturalizes easily in gardens, creating vibrant blue carpets of color. It is extremely cold-hardy and reliable, making it a favorite for woodland gardens, borders, and naturalized settings.
Looking for a specific variety?
When should you plant Scilla in your zone?
Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.
Example Scilla timeline · Pittsburgh, PA (Zone 6b)
-
Plant Scilla
Around Apr 17Near Pittsburgh's average last spring frost.
-
Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
-
First Scilla blooms
Around Jun 16≈ 60 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Scilla dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 2-8; extremely cold-hardy and reliable in northern climates
Sign up free to see if Scilla grows in your zone — and get a personalized planting timeline.
Get my Scilla timeline →Growth Stages
Dormancy
12-15 weeksBulbs are stored dry and dormant, waiting for cold period (vernalization).
Store bulbs in cool, dry location after purchase. Chill in refrigerator for 12-15 weeks before planting, or plant outdoors in fall for natural chilling.
Root Development
6-8 weeksAfter fall planting, roots begin developing in cool soil before winter dormancy.
Ensure good soil contact and adequate moisture. No fertilizer needed at this stage.
Emergence & Shoot Growth
2-3 weeksShoots and leaves emerge through soil in early spring as temperatures warm.
Shoots are hardy and tolerate frost. Remove any winter mulch if needed for air circulation. Monitor for slugs.
Flowering
2-3 weeksDelicate, nodding bell-shaped flowers in shades of blue, purple, or white appear on short stems.
Peak bloom typically lasts 2-3 weeks. Deadhead spent flowers to encourage energy storage in bulbs. Avoid disturbing plants.
Foliage & Dormancy
4-6 weeksAfter flowering, narrow grass-like foliage remains green and photosynthesizes before dying back.
Allow foliage to yellow naturally and die back; do not cut prematurely. This replenishes bulb reserves. Gradually reduce watering.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
-
and
Handpick early morning or evening; use copper barriers or slug traps; encourage ground beetles and birds.
-
and
Plant bulbs deeper; use bulb cages or protective netting; plant less-preferred species; use repellents.
-
and
Plant in raised beds or containers; use hardware cloth barriers; maintain clean garden areas without debris.
-
Ensure excellent drainage; avoid waterlogging; remove affected bulbs; improve air circulation.
Uses
Not for consumption
CulinaryScilla bulbs are toxic and should never be eaten. All parts of the plant contain cardiac glycosides and are poisonous. [source]
Cut flowers & arrangements
HouseholdDelicate blue flower stems are lovely in early spring bouquets and arrangements, though they have a short vase life of 5-7 days. [source]
Garden design & naturalization
CraftScilla is excellent for creating early spring color in woodland gardens, rock gardens, under trees, and in lawns. They naturalize freely and multiply over time. [source]
Early pollinator food source
WildlifeProvides essential early nectar and pollen for emerging bees and other pollinators in spring when food sources are scarce. [source]
Traditional medicinal uses
MedicinalHistorically used in traditional medicine and homeopathy for cardiac and respiratory conditions, though modern use is limited due to toxicity concerns. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Scilla is primarily ornamental and not typically harvested. Cut flowers can be picked for arrangements during peak bloom by gently cutting stems at soil level. Leave most flowers on plant to support bulb vigor for next season. Allow foliage to die back naturally to recharge bulbs.
Fun Facts
- 🌱 Scilla siberica is not actually native to Siberia despite its common name 'Siberian squill'—it originates from the Caucasus region of southern Russia.
- 🌱 Scilla produces thousands of seeds naturally, allowing it to spread and naturalize throughout gardens and lawns, eventually creating dramatic blue drifts without replanting.
- 🌱 The name 'Scilla' comes from Greek mythology; it refers to the sea monster Scylla, though the connection to the plant is unclear and likely refers to historical misidentification.
Gardening Terms
New to gardening? Learn about terms used in this guide:
Join 30,000 gardeners planning their gardens with LizPlants.
Get your personalized Scilla planting timeline
Tell us your zip code and we'll calculate exactly when to start Scilla seeds, transplant seedlings, and harvest — based on your USDA zone and local frost dates. Includes calendar reminders and printable task lists. Free to start.
Get my Scilla timeline →