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Aster alpinus (Alpine Aster)

Alpine Aster, Blue Alpine Daisy, Rock Aster

AGM Award
Aster alpinus, Alpine Aster, Blue Alpine Daisy, Rock Aster, Summer Perennials, Summer Flowers, Lavender Asters, Blue Asters
Aster alpinus, Alpine Aster, Blue Alpine Daisy, Rock Aster, Summer Perennials, Summer Flowers, Lavender Asters, Blue Asters
Aster alpinus, Alpine Aster, Blue Alpine Daisy, Rock Aster, Summer Perennials, Summer Flowers, Lavender Asters, Blue Asters

Fully frost hardy, Aster alpinus (Alpine Aster) is a clump-forming herbaceous perennial boasting masses of large daisy-like flowers, 2 in. across (5 cm), with blue-violet rays and golden-yellow centers. Blooming in late spring to mid-summer, the eye-catching blossoms are attractive to butterflies. Borne on slender stems, their gentle color blends with almost any other color in the garden. The foliage of narrow dark green leaves is handsome all season. Slowly spreading, with a neat and compact habit, Alpine Aster is great for sunny border fronts, rock gardens, or large patio containers.

  • Recipient of the prestigious Award of Garden Merit of the Royal Horticultural Society.
  • Grows up to 6-12 in. tall and wide (15-30 cm).
  • Thrives in full sun in moderately fertile, medium moisture, well-drained soils. Tolerates light shade. Drought and rocky soil tolerant.
  • Great for beds and borders, city gardens, cottage gardens, rock gardens, and banks and slopes.
  • No serious pest or disease issues. Keep an eye out for slugs, snails, leaf and bud eelworms, aphids, wilts, leaf spots, and gray molds.
  • Cut back after flowering.
  • Propagate by seed in pots in a cold frame in spring or autumn or propagate by division in spring.
  • Native to Europe, North America, and Temperate Asia.

Requirements

Hardiness 4 - 8
Heat Zones 1 - 8
Plant Type Perennials
Plant Family Compositae
Genus Aster
Common names Michaelmas Daisy, Aster
Exposure Full Sun
Season of Interest Spring (Late)
Summer (Early, Mid)
Height 6" - 1'
(15cm - 30cm)
Spread 6" - 1'
(15cm - 30cm)
Spacing 12" (30cm)
Maintenance Low
Water Needs Low, Average
Soil Type Chalk, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Plant of Merit, Showy
Native Plants United States, Rocky Mountains, Alaska, Colorado
Tolerance Drought, Deer, Rocky Soil
Attracts Butterflies
Garden Uses Banks And Slopes, Beds And Borders, Patio And Containers
Garden Styles City and Courtyard, Informal and Cottage, Gravel and Rock Garden
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Alternative Plants to Consider

Symphyotrichum leave ‘Bluebird’ (Smooth Aster)
Ampelaster carolinianus (Climbing Aster)
Doellingeria umbellata (Flat-Topped White Aster)
Aster novi-belgii (New York Aster)
Symphyotrichum chilense (Pacific Aster)
Symphyotrichum lanceolatum (White Panicle Aster)

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Aster novae-angliae (New England Aster)
Aster novi-belgii (New York Aster)
Aster amellus (Italian Aster)
While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.
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Requirements

Hardiness 4 - 8
Heat Zones 1 - 8
Plant Type Perennials
Plant Family Compositae
Genus Aster
Common names Michaelmas Daisy, Aster
Exposure Full Sun
Season of Interest Spring (Late)
Summer (Early, Mid)
Height 6" - 1'
(15cm - 30cm)
Spread 6" - 1'
(15cm - 30cm)
Spacing 12" (30cm)
Maintenance Low
Water Needs Low, Average
Soil Type Chalk, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Plant of Merit, Showy
Native Plants United States, Rocky Mountains, Alaska, Colorado
Tolerance Drought, Deer, Rocky Soil
Attracts Butterflies
Garden Uses Banks And Slopes, Beds And Borders, Patio And Containers
Garden Styles City and Courtyard, Informal and Cottage, Gravel and Rock Garden
How Many Plants
Do I Need?
Explore Great Plant Combination Ideas
Aster
Guides with
Aster
Not sure which Aster to pick?
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