Siberian squill (Scilla siberica)

Also known as: Siberian Squill

Siberian squill (Scilla siberica), part of the lily family, is somewhat misleadingly named, as it isn't native to Siberia but rather southwestern Russia, the Caucasus, and Turkey. Cultivated since 1796, it flourishes in well-drained, fertile soil with partial to full sunlight. This resilient plant is ideal for USDA zones 2-8 and is celebrated for its early spring blue flowers.

In This Article

Care Tips Water Sunlight Temperature Soil Fertilize Prune Propagation Repotting Toxicity

Attributes of Siberian squill

Lifespan

Perennial

Plant Type

Herb

Plant Height

10 cm to 20 cm

Spread

5 cm

Leaf Color

Green

Flower Size

2.5 cm

Flower Color

Blue

Images of Siberian squill

Quickly Identify Siberian squill

Clusters of nodding blue flowers, each around 1 inch (2.54 cm) wide.

Slender, upright stems reaching 4-8 inches (10-20 cm) in height.

Elongated, glossy green leaves arching gracefully towards the ground.

Multiple bulbs planted close together with 1-2 inches (2.5-5 cm) spacing.

Resilient to cold, tolerating temperatures down to 14 degrees F (-10 degrees C).

Scientific Classification of Siberian squill

Phylum

Vascular plants

Class

Monocotyledons

Order

Asparagales

Family

Asparagus

Genus

Squills

Species

Siberian squill

Planting and Growing of Siberian squill

Care Difficulty

Easy

Watering Schedule

Every 4 days

Sunlight Requirements

Partial sun

Sunshine Duration

4-8 hours

Ideal Temperature

50-60℉

Soil Type

Potting Mix, Peat Mix

Soil pH

6.5-7.5

Fertilizer Type

Balanced

Pruning Season

Spring, Summer

Pruning Area

Branches, Leaves

Pruning Frequency

2 times a year

Repotting Season

Spring

Pot Type

Plastic, Ceramic

How to Water Siberian squill?

For Scilla siberica, the watering amount is crucial to maintain its vibrant growth. Generally, you should ensure the soil is consistently moist but not waterlogged. Each watering session should involve around 250 ml, enough to moisten the soil to a 2-inch depth without causing excessive runoff.

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What Are the Sunlight Requirements for Siberian squill?

Sunlight Requirements: Partial sun, Full shade

Duration of light: 4 to 6 hours

Partial sun to full shade is optimal, providing Scilla siberica with enough light for photosynthesis and flowering without the risk of leaf burn, ensuring vibrant and healthy growth.

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What Is the Ideal Temperature Range for Siberian squill?

Ideal Temperature: 50 ~ 60℉

Siberian squill thrives best in a stable, temperate environment usually between 50°F and 60°F. This range facilitates optimal growth and flowering, ensuring the plant develops robust roots and blooms vibrantly. Within this temperature range, the cellular processes that drive growth and photosynthesis are highly efficient, leading to a healthy and flourishing plant.

What Soil is Best for Siberian squill?

Soil type: Loam, Sandy loam

Soil PH: 6.5 ~ 7.5

Scilla siberica thrives in well-draining soil to prevent root rot. Loam or sandy loam is ideal as it allows excess water to escape while retaining enough moisture for healthy growth. A soil enriched with organic matter contributes significantly to the robust growth of Scilla siberica by providing essential nutrients that promote vibrant blooms. Maintaining a soil pH between 6.5 and 7.5 helps optimize nutrient uptake, fostering strong plant health and enhancing the aesthetic appeal of its flowers.

How to Fertilize Siberian squill?

Fertilizer type: Balanced

For Scilla siberica, it's ideal to use a balanced fertilizer with an NPK ratio around 10-10-10. Apply approximately 1 teaspoon of diluted liquid fertilizer around each plant. Ensure the soil is moist before application to prevent root burn.

How to Prune Siberian squill?

Pruning Time: Summer

Begin by inspecting the plant for any dead, damaged, or diseased leaves or stems. Use a pair of clean, sharp scissors or pruning shears to remove these parts at the base, being careful not to harm any healthy foliage. Next, thin out crowded areas to improve air circulation and light penetration. This process not only enhances the plant's appearance but also reduces the risk of disease. After pruning, clean up any debris around the plant to prevent pest infestations. More About Pruning Techniques→

How to Propagate Siberian squill plant?

Propagate Time: Early spring, Late winter

Collect Scilla siberica seeds after flowering and scatter them thinly on a seed tray filled with well-draining compost. Cover lightly with soil and maintain consistent moisture to encourage germination.

Dig up mature clumps of Scilla siberica in late winter. Gently separate the bulbs and remove any damaged roots. Replant the bulbs in prepared beds at the correct depth for healthy development.

Prepare the planting site by loosening the soil. Incorporate organic matter to improve drainage and fertility. Ensure the site is well-drained to prevent bulb rot and promote vigorous growth.

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How to Repot Siberian squill plant?

Repotting frequency: Every 2-3 years

Scilla siberica shows it needs repotting when the bulbs become overcrowded or growth slows down. The best time is early spring, before new growth appears, as this gives the plant ample time to settle into its new environment during the growing season.

Select a pot that is one size larger than the current one, ensuring it has drainage holes to prevent waterlogging. A terracotta pot is ideal as it allows the soil to breathe, promoting healthier root development and reducing the risk of rot.

Opt for a well-draining potting mix enriched with organic matter. This kind of soil not only prevents bulb rot by ensuring excellent drainage but also provides necessary nutrients that encourage robust growth and vibrant blooms.

Toxicity of Siberian squill

Is Siberian squill toxic to humans?

Siberian squill is recognized as one of the most hazardous of the squill species, particularly when ingested. While mere contact with the plant may lead to skin rashes in those who are sensitive, consuming it results in far more severe consequences than just stomach discomfort. This plant is rich in cardiac glycosides that can adversely affect the heart muscle, potentially resulting in fatal outcomes. Typical symptoms associated with its ingestion include vomiting, diarrhea, abdominal pain, and oral discomfort. Additionally, it is known to decrease heart rate, occasionally dropping it to perilously low levels. It is essential to keep this plant out of reach of young children.

Is Siberian squill toxic to cat?

Siberian squill is regarded as toxic to cats. Cats usually encounter siberian squill when they inadvertently consume parts of the plant. Every section of siberian squill carries a potential hazard, which means even slight ingestion can result in distressing symptoms. Cats affected by siberian squill poisoning may show various signs of illness, including but not restricted to vomiting, diarrhea, or excessive salivation. Given the serious nature of possible adverse effects, it is crucial for cat owners to swiftly obtain veterinary assistance if they believe their pet has consumed siberian squill. Quick professional response can reduce risks and safeguard the health of the impacted cat.

Is Siberian squill toxic to dog?

Siberian squill is recognized as a toxic species harmful to dogs. All parts of this plant are deemed poisonous, meaning that consumption of any portion can lead to poisoning in dogs. If a dog ingests Siberian squill, it may show symptoms such as vomiting, diarrhea, lethargy, or even more severe indications, depending on the quantity consumed. It is essential for dog owners to restrict their pets' access to this plant and remain vigilant when in areas where Siberian squill is found. Should a dog consume Siberian squill, it is critical to obtain prompt veterinary attention to secure the best possible outcome for the affected pet.

WARNING

The judgment on toxicity and danger is for reference only. We DO NOT GUARANTEE any accuracy of such judgment. Therefore, you SHALL NOT rely on such judgment. It is IMPORTANT TO SEEK PROFESSIONAL ADVICE in advance when necessary.

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