Arctic aster (Eurybia sibirica)

Also known as: Siberian Aster

The Arctic aster is a robust perennial well-suited to the cool Siberian climate. It forms clumps with lance-shaped leaves and produces clusters of daisy-like, lavender-blue flowers from late summer to fall. These attractive blooms, surrounded by dense foliage, draw in numerous pollinators, aiding in the plant's survival and spread in its native subarctic regions.

In This Article

Care Tips Water Sunlight Temperature Soil Fertilize Prune Propagation Repotting

Attributes of Arctic aster

Lifespan

Perennial

Plant Type

Herb

Plant Height

0 mm to 30 cm

Spread

20-30 cm

Leaf Color

Green

Flower Size

2-3 cm

Flower Color

Purple, Blue

Images of Arctic aster

Quickly Identify Arctic aster

Eurybia sibirica can be identified by its lance-shaped leaves, purple or blue flowers with a yellow center, and its tendency to grow in clusters.

Scientific Classification of Arctic aster

Phylum

Vascular plants

Class

Dicotyledons

Order

Asterales

Family

Daisy

Genus

Eurybia

Species

Arctic aster

Planting and Growing of Arctic aster

Care Difficulty

Moderate

Watering Schedule

Every 3 days

Sunlight Requirements

Partial sun

Sunshine Duration

4-8 hours

Ideal Temperature

60-70℉

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 Arctic aster?

Eurybia sibirica prefers a consistent watering schedule that mimics its natural habitat. Ensure that the soil is moist but not overly saturated. Water the plant thoroughly until the excess begins to seep out of the drainage holes, ensuring the roots receive adequate hydration without being waterlogged.

What are the symptoms of an underwatered Arctic aster? ›

What should I do if my Arctic aster is not getting enough water? ›

What are the symptoms of an overwatered Arctic aster? ›

How to save an overwatered Arctic aster? ›

What Are the Sunlight Requirements for Arctic aster?

Sunlight Requirements: Partial sun

Duration of light: 4 to 6 hours

Eurybia sibirica prefers partial sunlight, meaning it should be exposed to four to six hours of light daily. Ideal lighting enhances flowering, leaf color, and overall vitality.

What is the best lighting condition for Eurybia sibirica? ›

How can the ideal lighting condition be achieved? ›

What benefits does ideal lighting provide? ›

What Is the Ideal Temperature Range for Arctic aster?

Ideal Temperature: 60 ~ 70℉

The ideal temperature range for cultivating Eurybia sibirica is between 60 and 70°F. This range provides the necessary warmth to ensure healthy growth and robust flowering. Maintaining this temperature balance is critical for the plant's photosynthetic processes and overall vigor.

What Soil is Best for Arctic aster?

Soil type: Loam, Sandy loam, Acidic soil

Soil PH: 6.5 ~ 7.5

Eurybia sibirica thrives in well-draining soil that prevents waterlogging, which can lead to root rot. A loamy or sandy loam soil with good drainage ensures that the roots receive enough air and nutrients without becoming oversaturated. This setup is ideal for the plant's health and growth. This plant prefers soil that is rich in organic material and nutrients. Amending the soil with compost or well-rotted manure can provide the necessary nourishment. Such a nutrient-dense environment supports robust growth and vibrant foliage. Eurybia sibirica favors soil with a slightly acidic pH range of 6.5 to 7.5. This acidity level helps balance nutrient availability, ensuring the plant can absorb essential minerals efficiently.

How to Fertilize Arctic aster?

Fertilizer type: Balanced

Eurybia sibirica requires a balanced nutrient supply to thrive. For liquid fertilizers, use a diluted solution at half the recommended strength to avoid burning the roots. When applying slow-release fertilizers, use 50 grams per square meter to ensure a steady nutrient supply over time.

How to Prune Arctic aster?

Pruning Time: Spring, Summer

Always use sharp, clean pruning shears to make clean cuts. This reduces the risk of tearing plant tissue and minimizes the chance of infection or disease. More About Pruning Techniques→

How to Propagate Arctic aster plant?

Propagate Time: Spring, Early spring

Start by filling seed trays with a quality seed-starting mix. Sow Eurybia sibirica seeds on the surface and cover them lightly with soil. Maintain a temperature around 18-20°C (64-68°F) for optimal germination.

Once the seedlings have developed a set of true leaves, carefully transplant them into individual pots. Ensure that the soil remains moist but not waterlogged and provide ample sunlight to promote growth.

In early spring, lift established plants with a garden fork. Use a sharp knife to divide the root ball into sections, ensuring each has a good supply of roots and shoots. Replant immediately at the same depth they were growing.

More About Propagating Techniques→

How to Repot Arctic aster plant?

Repotting frequency: every 2-3 years

Eurybia sibirica shows signs it's ready for repotting when you notice roots emerging from the drainage holes, which indicates root crowding. Additionally, if the growth slows or the pot feels too tight, it's time to consider giving it more space to thrive.

Select a pot that's one to two inches larger in diameter than the current one. A pot with good drainage is crucial to prevent water-logging, which Eurybia sibirica dislikes. A terracotta or ceramic pot with drainage holes will provide optimal aeration and moisture control.

Opt for a well-draining loamy soil mix to allow for proper air circulation and avoid water retention. This type of soil helps to mimic the plant's natural environment, promoting healthier roots and more vigorous growth.