Siberian squill
Scilla siberica · Asparagaceae
📷 Dominicus Johannes Bergsma · CC BY-SA 3.0
⚠️ Bulbes toxiques par ingestion. Chiens, chats, enfants : irritation buccale et digestive, troubles GI modérés.
The gardener's calendar
Ideal time to plant siberian squill: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Flowering
- March to April
- Adult size
- 15 to 20 cm tall
- Foliage
- Deciduous
- Hardiness
- Very hardy (down to -15°C)
- Soil type
- Well-drained, light
- Origin
- Russia and Caucasus
✓ Taxonomy verifiedSource: AI estimate · hardiness: reliability high.
Expert tips
The key tip
Plant bulbs in September-October at 8-10 cm deep, in tight clusters for a stunning display. Adding river sand when planting improves drainage and reduces bulb rot.
The common mistake
Planting too late (after November) or too shallow: they germinate in winter and will freeze if exposed to the surface, failing to flower in spring.
The pro's trick
After flowering, let the foliage yellow naturally for 4-5 weeks before cutting it back.
Care
Light Exposure
Siberian squill prefers a location in full sun to partial shade for optimal flowering. It tolerates bright spots in deciduous woodlands well, where it benefits from light before the trees leaf out. Avoid overly shaded areas that may reduce flowering.
Soil
This bulb appreciates well-drained, light soil rich in organic matter. Soil that is too compact or wet promotes bulb rot. Adding decomposed compost or potting soil when planting improves conditions.
Watering
Water regularly during active growth in spring to keep the soil slightly moist. Once flowering is finished and leaves have wilted, gradually reduce watering. In autumn, moderate watering before dormancy is sufficient.
Fertilizing
A low-dose application of bulb-specific fertilizer at the start of growth in late winter helps produce beautiful flowers. Fertilizer should not be excessive, as it would encourage foliage at the expense of blooms. A potassium boost after flowering strengthens bulbs for the next season.
Pruning and Cutting
No pruning is necessary. Allow the foliage to wither naturally after flowering, as it allows the bulb to replenish its reserves. You can remove spent flowers to improve aesthetics, but wait until the leaves turn yellow before cutting them back.
Diseases and Pests
Siberian squill is generally very healthy and rarely affected by diseases. Be careful, however, of bulb rot if there is excess moisture or poor drainage. Rodents may sometimes attack bulbs: a mulch of shells or planting in a basket can protect them.
Did you know?
Despite its name, Siberian squill does not come from Siberia but from southern Caucasus and Central Asia. Its misleading nickname comes from its great hardiness, which allows it to flower very early in spring, even in cold regions. It's one of the first blue flowers to brighten gardens, well before most spring bulbs.
Where to buy it
Plant the bulbs in autumn for spring flowering. Pick a plant with healthy foliage and roots that are not exposed. Best time: from September to November.
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Tips generated and checked by Viridia — adapt them to your local climate.