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Aster Smooth Blue

Symphyotrichum laeve

Aster Smooth Blue (Symphyotrichum laeve) is a hardy, native perennial known for its smooth, blue-green foliage and vibrant clusters of lavender-blue flowers. Blooming from late summer to fall, this aster attracts pollinators such as bees and butterflies, making it a favorite in wildflower gardens. It thrives in full sun and well-drained soils, growing up to 3 feet tall. Aster Smooth Blue is both drought-tolerant and low-maintenance, adding color and resilience to any landscape.

$3.65

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Plant Data
Growing Instructions
Plant Data
Zones:  3, 4, 5, 6, 7, 8
Growth Cycle:  Perennial
Light:  Full Sun, Full Sun to Partial Shade
Water Needs:  Low, Low to Moderate
Color: 
Soil:  Chalky, Loam, Sandy, Clay
Growth Rate:  Moderate
Maturity - (Vegetables Only): 
Edible:  Yes, with caution.
Height:  Up to 2 Feet
Evergreen:  No
Special Features:  Attracts Pollinators,Cold Hardy, Dried Flowers,Cut Flowers
Warnings:  Uknown - Let us Know
Growing Instructions
How to Germinate Aster Smooth Blue

How to Germinate Aster Smooth Blue (Symphyotrichum laeve)

  • Start by sowing seeds indoors 6-8 weeks before the last expected frost in your area.
  • Press the seeds lightly onto the surface of a seed-starting mix; do not cover them as they need light to germinate.
  • Keep the soil consistently moist and maintain a temperature of 65-70°F (18-21°C) for optimal germination.
  • Place the seed trays in a bright location, such as near a sunny window or under grow lights.
  • Germination usually takes 2-3 weeks. Thin seedlings to prevent overcrowding.
  • Once seedlings have developed a few true leaves, transplant them outdoors after the danger of frost has passed.

Additional Tips

  • Aster Smooth Blue prefers full sun to partial shade and well-drained, loamy soil.
  • Water regularly, especially during the first growing season, to help establish a deep root system.
  • Apply a layer of mulch around the plants to retain moisture and control weeds.
  • Prune plants in late fall to prepare them for winter and encourage vigorous growth in spring.
  • Divide mature plants every 2-3 years to promote healthy growth and prevent overcrowding.
Aster Smooth Blue

Aster Smooth Blue

$3.65